Finding the Third Proportional to 31,407.75 and 63,726.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,407.75 : 63,726.75 = 63,726.75 : x
2. Step 2: Convert to fraction form
   31,407.75/63,726.75 = 63,726.75/x
3. Step 3: Cross multiply
   31,407.75x = 63,726.75 × 63,726.75
4. Step 4: Simplify right side
   31,407.75x = 4,061,098,665.56
5. Step 5: Solve for x
   x = 4,061,098,665.56/31,407.75
6. Step 6: Final answer
   x = 129,302.44