Finding the Third Proportional to 31,098 and 67,108

Step by Step Solution

1. Step 1: Write the proportion equation
   31,098 : 67,108 = 67,108 : x
2. Step 2: Convert to fraction form
   31,098/67,108 = 67,108/x
3. Step 3: Cross multiply
   31,098x = 67,108 × 67,108
4. Step 4: Simplify right side
   31,098x = 4,503,483,664
5. Step 5: Solve for x
   x = 4,503,483,664/31,098
6. Step 6: Final answer
   x = 144,815.86