Finding the Third Proportional to 31,988 and 68,602

Step by Step Solution

1. Step 1: Write the proportion equation
   31,988 : 68,602 = 68,602 : x
2. Step 2: Convert to fraction form
   31,988/68,602 = 68,602/x
3. Step 3: Cross multiply
   31,988x = 68,602 × 68,602
4. Step 4: Simplify right side
   31,988x = 4,706,234,404
5. Step 5: Solve for x
   x = 4,706,234,404/31,988
6. Step 6: Final answer
   x = 147,125.00