To find the missing exponent in the expression \(10^x = 100,000,000\), we need to rewrite \(100,000,000\) in terms of a power of 10.
We can break down \(100,000,000\) as follows:
\[ 100,000,000 = 10^8 \]
Now, we can set the two sides of the equation equal to each other:
\[ 10^x = 10^8 \]
Since the bases are the same, we can equate the exponents:
\[ x = 8 \]
Therefore, the missing exponent is \(8\).