Finding the Third Proportional to 31,622 and 66,150

Step by Step Solution

1. Step 1: Write the proportion equation
   31,622 : 66,150 = 66,150 : x
2. Step 2: Convert to fraction form
   31,622/66,150 = 66,150/x
3. Step 3: Cross multiply
   31,622x = 66,150 × 66,150
4. Step 4: Simplify right side
   31,622x = 4,375,822,500
5. Step 5: Solve for x
   x = 4,375,822,500/31,622
6. Step 6: Final answer
   x = 138,379.06