Finding the Third Proportional to 64,531.25 and 138,401.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,531.25 : 138,401.25 = 138,401.25 : x
2. Step 2: Convert to fraction form
   64,531.25/138,401.25 = 138,401.25/x
3. Step 3: Cross multiply
   64,531.25x = 138,401.25 × 138,401.25
4. Step 4: Simplify right side
   64,531.25x = 19,154,906,001.56
5. Step 5: Solve for x
   x = 19,154,906,001.56/64,531.25
6. Step 6: Final answer
   x = 296,831.47