Finding the Third Proportional to 31,863 and 67,521

Step by Step Solution

1. Step 1: Write the proportion equation
   31,863 : 67,521 = 67,521 : x
2. Step 2: Convert to fraction form
   31,863/67,521 = 67,521/x
3. Step 3: Cross multiply
   31,863x = 67,521 × 67,521
4. Step 4: Simplify right side
   31,863x = 4,559,085,441
5. Step 5: Solve for x
   x = 4,559,085,441/31,863
6. Step 6: Final answer
   x = 143,084.00