Finding the Third Proportional to 57,101.20 and 81,166.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,101.20 : 81,166.75 = 81,166.75 : x
2. Step 2: Convert to fraction form
   57,101.20/81,166.75 = 81,166.75/x
3. Step 3: Cross multiply
   57,101.20x = 81,166.75 × 81,166.75
4. Step 4: Simplify right side
   57,101.20x = 6,588,040,671.45
5. Step 5: Solve for x
   x = 6,588,040,671.45/57,101.20
6. Step 6: Final answer
   x = 115,374.81