Finding the Third Proportional to 57,643 and 123,898

Step by Step Solution

1. Step 1: Write the proportion equation
   57,643 : 123,898 = 123,898 : x
2. Step 2: Convert to fraction form
   57,643/123,898 = 123,898/x
3. Step 3: Cross multiply
   57,643x = 123,898 × 123,898
4. Step 4: Simplify right side
   57,643x = 15,350,714,404
5. Step 5: Solve for x
   x = 15,350,714,404/57,643
6. Step 6: Final answer
   x = 266,306.65