Finding the Third Proportional to 31,223.25 and 65,710.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,223.25 : 65,710.69 = 65,710.69 : x
2. Step 2: Convert to fraction form
   31,223.25/65,710.69 = 65,710.69/x
3. Step 3: Cross multiply
   31,223.25x = 65,710.69 × 65,710.69
4. Step 4: Simplify right side
   31,223.25x = 4,317,894,451.72
5. Step 5: Solve for x
   x = 4,317,894,451.72/31,223.25
6. Step 6: Final answer
   x = 138,291.00