To simplify \( 6^{10} \times 6^{5} \) using the Product Rule of Exponents, we follow this rule: when multiplying two numbers with the same base, we add the exponents.
So, we have:
\[ 6^{10} \times 6^{5} = 6^{10 + 5} \]
Now, we add the exponents:
\[ 10 + 5 = 15 \]
Therefore, the expression simplifies to:
\[ 6^{15} \]
So, the answer in exponent form is \( 6^{15} \).