Finding the Third Proportional to 31,060 and 65,800

Step by Step Solution

1. Step 1: Write the proportion equation
   31,060 : 65,800 = 65,800 : x
2. Step 2: Convert to fraction form
   31,060/65,800 = 65,800/x
3. Step 3: Cross multiply
   31,060x = 65,800 × 65,800
4. Step 4: Simplify right side
   31,060x = 4,329,640,000
5. Step 5: Solve for x
   x = 4,329,640,000/31,060
6. Step 6: Final answer
   x = 139,396.01