Finding the Third Proportional to 31,239 and 67,468

Step by Step Solution

1. Step 1: Write the proportion equation
   31,239 : 67,468 = 67,468 : x
2. Step 2: Convert to fraction form
   31,239/67,468 = 67,468/x
3. Step 3: Cross multiply
   31,239x = 67,468 × 67,468
4. Step 4: Simplify right side
   31,239x = 4,551,931,024
5. Step 5: Solve for x
   x = 4,551,931,024/31,239
6. Step 6: Final answer
   x = 145,713.08