To simplify the expression \( 2.7 \times 10^{5} \times 3.2 \times 10^{7} \), we will follow the provided steps.
Step 1: Multiply the coefficients
Multiply the coefficients \( 2.7 \) and \( 3.2 \):
\[ 2.7 \times 3.2 = 8.64 \]
Step 2: Add the exponents
Add the exponents \( 5 \) and \( 7 \):
\[ 5 + 7 = 12 \]
Step 3: Change into Scientific Notation
Now we combine the results:
\[ 8.64 \times 10^{12} \]
Now, we check if \( 8.64 \) is in scientific notation. It is correctly formatted as \( 8.64 \times 10^{12} \) because the coefficient is between 1 and 10.
Step 4: Final Answer
Thus, the simplified answer in scientific notation is:
\[ \boxed{8.64 \times 10^{12}} \]