Infinity

It is undefined.  (Unless you have more information)

Here is an example of why.

   $\displaystyle \lim_{x\rightarrow \infty} 2x=\infty\\ \displaystyle \lim_{x\rightarrow \infty} 3x=\infty\\ BUT\\ \displaystyle \lim_{x\rightarrow \infty} \frac{2x}{3x}=\frac{2}{3}$

big brain!!!! lol