To help you with the geometric mean and solve for \( x \), I need more information about the values involved. Typically, the geometric mean is used to find a value that represents the central tendency of a set of numbers, particularly in the context of two numbers \( a \) and \( b \), and it is calculated using the formula:
\[ x = \sqrt{ab} \]
If you provide the specific values of \( a \) and \( b \) for which you're trying to calculate the geometric mean, I can help you find \( x \) and round it to the nearest tenth.