Finding the Third Proportional to 123,570 and 251,508

Step by Step Solution

1. Step 1: Write the proportion equation
   123,570 : 251,508 = 251,508 : x
2. Step 2: Convert to fraction form
   123,570/251,508 = 251,508/x
3. Step 3: Cross multiply
   123,570x = 251,508 × 251,508
4. Step 4: Simplify right side
   123,570x = 63,256,274,064
5. Step 5: Solve for x
   x = 63,256,274,064/123,570
6. Step 6: Final answer
   x = 511,906.40