1. **State the problem:** Confirm if $256^{256}$ is the final answer. 2. **Recall previous result:** We found $x = 256$ and the expression is $x^x$. 3. **Substitute:** This means $256^{256}$. 4. **Interpretation:** Yes, $256^{256}$ is the final expression representing the solution. **Final answer:** $$256^{256}$$