Find the mean proportional between 13 and 52.

Explanation

To find the mean proportional between 13 and 52, we can follow these steps:

**Step 1: Understand the formula for mean proportional.**
The mean proportional \( x \) between two numbers \( a \) and \( b \) can be found using the formula:
\[ \frac{a}{x} = \frac{x}{b} \]
This can be rearranged to:
...