Finding the Third Proportional to 250,336 and 387,388

Step by Step Solution

1. Step 1: Write the proportion equation
   250,336 : 387,388 = 387,388 : x
2. Step 2: Convert to fraction form
   250,336/387,388 = 387,388/x
3. Step 3: Cross multiply
   250,336x = 387,388 × 387,388
4. Step 4: Simplify right side
   250,336x = 150,069,462,544
5. Step 5: Solve for x
   x = 150,069,462,544/250,336
6. Step 6: Final answer
   x = 599,472.16