What is the geometric mean of 9 and 35?

The geometric mean of two numbers is the square root of their product. In this case, the geometric mean of 9 and 35 would be the square root of (9 * 35), which is the square root of 315. Simplifying this, we get the square root of 9 * 35 = 3 * √35, which is approximately 16.73.