Finding the Third Proportional to 87,900 and 139,755

Step by Step Solution

1. Step 1: Write the proportion equation
   87,900 : 139,755 = 139,755 : x
2. Step 2: Convert to fraction form
   87,900/139,755 = 139,755/x
3. Step 3: Cross multiply
   87,900x = 139,755 × 139,755
4. Step 4: Simplify right side
   87,900x = 19,531,460,025
5. Step 5: Solve for x
   x = 19,531,460,025/87,900
6. Step 6: Final answer
   x = 222,200.91