Finding the Third Proportional to 31,032.75 and 66,439.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.75 : 66,439.31 = 66,439.31 : x
2. Step 2: Convert to fraction form
   31,032.75/66,439.31 = 66,439.31/x
3. Step 3: Cross multiply
   31,032.75x = 66,439.31 × 66,439.31
4. Step 4: Simplify right side
   31,032.75x = 4,414,182,245.47
5. Step 5: Solve for x
   x = 4,414,182,245.47/31,032.75
6. Step 6: Final answer
   x = 142,242.70