Finding the Third Proportional to 57,415.13 and 81,657.38

Step by Step Solution

1. Step 1: Write the proportion equation
   57,415.13 : 81,657.38 = 81,657.38 : x
2. Step 2: Convert to fraction form
   57,415.13/81,657.38 = 81,657.38/x
3. Step 3: Cross multiply
   57,415.13x = 81,657.38 × 81,657.38
4. Step 4: Simplify right side
   57,415.13x = 6,667,926,891.89
5. Step 5: Solve for x
   x = 6,667,926,891.89/57,415.13
6. Step 6: Final answer
   x = 116,135.37