Finding the Third Proportional to 66,502.13 and 91,447.31

Step by Step Solution

1. Step 1: Write the proportion equation
   66,502.13 : 91,447.31 = 91,447.31 : x
2. Step 2: Convert to fraction form
   66,502.13/91,447.31 = 91,447.31/x
3. Step 3: Cross multiply
   66,502.13x = 91,447.31 × 91,447.31
4. Step 4: Simplify right side
   66,502.13x = 8,362,610,963.47
5. Step 5: Solve for x
   x = 8,362,610,963.47/66,502.13
6. Step 6: Final answer
   x = 125,749.53