Finding the Third Proportional to 250,540 and 387,772

Step by Step Solution

1. Step 1: Write the proportion equation
   250,540 : 387,772 = 387,772 : x
2. Step 2: Convert to fraction form
   250,540/387,772 = 387,772/x
3. Step 3: Cross multiply
   250,540x = 387,772 × 387,772
4. Step 4: Simplify right side
   250,540x = 150,367,123,984
5. Step 5: Solve for x
   x = 150,367,123,984/250,540
6. Step 6: Final answer
   x = 600,172.12