Finding the Third Proportional to 250,329 and 387,372

Step by Step Solution

1. Step 1: Write the proportion equation
   250,329 : 387,372 = 387,372 : x
2. Step 2: Convert to fraction form
   250,329/387,372 = 387,372/x
3. Step 3: Cross multiply
   250,329x = 387,372 × 387,372
4. Step 4: Simplify right side
   250,329x = 150,057,066,384
5. Step 5: Solve for x
   x = 150,057,066,384/250,329
6. Step 6: Final answer
   x = 599,439.40