Finding the Third Proportional to 87,898 and 139,751

Step by Step Solution

1. Step 1: Write the proportion equation
   87,898 : 139,751 = 139,751 : x
2. Step 2: Convert to fraction form
   87,898/139,751 = 139,751/x
3. Step 3: Cross multiply
   87,898x = 139,751 × 139,751
4. Step 4: Simplify right side
   87,898x = 19,530,342,001
5. Step 5: Solve for x
   x = 19,530,342,001/87,898
6. Step 6: Final answer
   x = 222,193.25