Finding the Third Proportional to 52,816.50 and 81,910.13

Step by Step Solution

1. Step 1: Write the proportion equation
   52,816.50 : 81,910.13 = 81,910.13 : x
2. Step 2: Convert to fraction form
   52,816.50/81,910.13 = 81,910.13/x
3. Step 3: Cross multiply
   52,816.50x = 81,910.13 × 81,910.13
4. Step 4: Simplify right side
   52,816.50x = 6,709,268,577.52
5. Step 5: Solve for x
   x = 6,709,268,577.52/52,816.50
6. Step 6: Final answer
   x = 127,029.78