Finding the Third Proportional to 66,883.31 and 91,713.56

Step by Step Solution

1. Step 1: Write the proportion equation
   66,883.31 : 91,713.56 = 91,713.56 : x
2. Step 2: Convert to fraction form
   66,883.31/91,713.56 = 91,713.56/x
3. Step 3: Cross multiply
   66,883.31x = 91,713.56 × 91,713.56
4. Step 4: Simplify right side
   66,883.31x = 8,411,377,546.44
5. Step 5: Solve for x
   x = 8,411,377,546.44/66,883.31
6. Step 6: Final answer
   x = 125,761.98