Finding the Third Proportional to 52,791.28 and 81,811.03

Step by Step Solution

1. Step 1: Write the proportion equation
   52,791.28 : 81,811.03 = 81,811.03 : x
2. Step 2: Convert to fraction form
   52,791.28/81,811.03 = 81,811.03/x
3. Step 3: Cross multiply
   52,791.28x = 81,811.03 × 81,811.03
4. Step 4: Simplify right side
   52,791.28x = 6,693,044,354.83
5. Step 5: Solve for x
   x = 6,693,044,354.83/52,791.28
6. Step 6: Final answer
   x = 126,783.15