Finding the Third Proportional to 31,292 and 67,892

Step by Step Solution

1. Step 1: Write the proportion equation
   31,292 : 67,892 = 67,892 : x
2. Step 2: Convert to fraction form
   31,292/67,892 = 67,892/x
3. Step 3: Cross multiply
   31,292x = 67,892 × 67,892
4. Step 4: Simplify right side
   31,292x = 4,609,323,664
5. Step 5: Solve for x
   x = 4,609,323,664/31,292
6. Step 6: Final answer
   x = 147,300.39