Finding the Third Proportional to 29,725.31 and 64,987.31

Step by Step Solution

1. Step 1: Write the proportion equation
   29,725.31 : 64,987.31 = 64,987.31 : x
2. Step 2: Convert to fraction form
   29,725.31/64,987.31 = 64,987.31/x
3. Step 3: Cross multiply
   29,725.31x = 64,987.31 × 64,987.31
4. Step 4: Simplify right side
   29,725.31x = 4,223,350,785.97
5. Step 5: Solve for x
   x = 4,223,350,785.97/29,725.31
6. Step 6: Final answer
   x = 142,079.27