Finding the Third Proportional to 123,218 and 250,902

Step by Step Solution

1. Step 1: Write the proportion equation
   123,218 : 250,902 = 250,902 : x
2. Step 2: Convert to fraction form
   123,218/250,902 = 250,902/x
3. Step 3: Cross multiply
   123,218x = 250,902 × 250,902
4. Step 4: Simplify right side
   123,218x = 62,951,813,604
5. Step 5: Solve for x
   x = 62,951,813,604/123,218
6. Step 6: Final answer
   x = 510,897.87