Finding the Third Proportional to 57,690 and 123,998

Step by Step Solution

1. Step 1: Write the proportion equation
   57,690 : 123,998 = 123,998 : x
2. Step 2: Convert to fraction form
   57,690/123,998 = 123,998/x
3. Step 3: Cross multiply
   57,690x = 123,998 × 123,998
4. Step 4: Simplify right side
   57,690x = 15,375,504,004
5. Step 5: Solve for x
   x = 15,375,504,004/57,690
6. Step 6: Final answer
   x = 266,519.40