$Apple(AAPL.US)$ Apple's last Form 10-K reported 16,406,397,000 shares...

$Apple(AAPL.US)$ Apple's last Form 10-K reported 16,406,397,000 shares of stock were outstanding as of October 15, 2021. They also reported that 141,521 shares repurchased during the most recent quarter.

Extrapolating that repurchase rate forward to the present, there are approximately 16,406,255,500 shares outstanding at this time, which would imply $182.86 is the stock price needed to reach a three trillion dollar capitalization.