Finding the Third Proportional to 56,687.25 and 81,945.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,687.25 : 81,945.75 = 81,945.75 : x
2. Step 2: Convert to fraction form
   56,687.25/81,945.75 = 81,945.75/x
3. Step 3: Cross multiply
   56,687.25x = 81,945.75 × 81,945.75
4. Step 4: Simplify right side
   56,687.25x = 6,715,105,943.06
5. Step 5: Solve for x
   x = 6,715,105,943.06/56,687.25
6. Step 6: Final answer
   x = 118,458.84