Finding the Third Proportional to 57,521 and 123,040

Step by Step Solution

1. Step 1: Write the proportion equation
   57,521 : 123,040 = 123,040 : x
2. Step 2: Convert to fraction form
   57,521/123,040 = 123,040/x
3. Step 3: Cross multiply
   57,521x = 123,040 × 123,040
4. Step 4: Simplify right side
   57,521x = 15,138,841,600
5. Step 5: Solve for x
   x = 15,138,841,600/57,521
6. Step 6: Final answer
   x = 263,188.08