Finding the Third Proportional to 250,408 and 387,762

Step by Step Solution

1. Step 1: Write the proportion equation
   250,408 : 387,762 = 387,762 : x
2. Step 2: Convert to fraction form
   250,408/387,762 = 387,762/x
3. Step 3: Cross multiply
   250,408x = 387,762 × 387,762
4. Step 4: Simplify right side
   250,408x = 150,359,368,644
5. Step 5: Solve for x
   x = 150,359,368,644/250,408
6. Step 6: Final answer
   x = 600,457.53