Google (Nasdaq: GOOG) is expected to report Q3 earnings on Oct. 18. Here's what Wall Street wants to see:

The 10-second takeaway
 Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict Google's revenues will expand 51.6% and EPS will grow 9.7%.

The average estimate for revenue is $14.73 billion. On the bottom line, the average EPS estimate is $10.66.

Revenue details
 Last quarter, Google tallied revenue of $12.21 billion. GAAP reported sales were 35% higher than the prior-year quarter's $9.03 billion.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 Last quarter, non-GAAP EPS came in at $10.12. GAAP EPS of $8.42 for Q2 were 9.6% higher than the prior-year quarter's $7.68 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Recent performance
 For the preceding quarter, gross margin was 59.0%, 590 basis points worse than the prior-year quarter. Operating margin was 27.2%, 470 basis points worse than the prior-year quarter. Net margin was 22.8%, 500 basis points worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $53.12 billion. The average EPS estimate is $42.69.

Investor sentiment
 The stock has a four-star rating (out of five) at Motley Fool CAPS, with 15,322 members out of 17,803 rating the stock outperform, and 2,481 members rating it underperform. Among 3,770 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 3,414 give Google a green thumbs-up, and 356 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Google is outperform, with an average price target of $741.11.

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