To find the missing side length \( x \) in a right triangle, we can use the Pythagorean theorem, which states:
\[ a^2 + b^2 = c^2 \]
Here, \( a \) and \( b \) are the lengths of the two legs of the triangle, and \( c \) is the length of the hypotenuse.
If you provide the lengths of the two sides of the right triangle, I can help you solve for \( x \).