#### Answer

$10^{2.3}$, $199.5262$

#### Work Step by Step

Based on the definition of the common logarithm, we know that $log(x)=log_{10}x$.
Furthermore, recall that $log_{b}x=y$ is equivalent to the statement $b^{y}=x$ (where $x\gt0$, $y$ is a real number, and $b\gt0$ and $b\ne1$).
Therefore, $log(x)=log_{10}x=2.3$ is equivalent to $10^{2.3}=x$.
We know that $x=10^{2.3}\approx199.5262$.