Answer
$$y=\frac{\ln(\ln x)+\ln3}{\ln3}$$
Work Step by Step
$$3^y=3\ln x$$
Take the natural logarithm of both sides:
$$\ln(3^y)=\ln(3\ln x)$$
Remember that $\ln x^a=a\ln x$ and $\ln(xy)=\ln x+\ln y$
$$y\ln3=\ln3+\ln(\ln x)$$ $$y=\frac{\ln(\ln x)+\ln3}{\ln3}$$
