Finding the Third Proportional to 250,708 and 388,388

Step by Step Solution

1. Step 1: Write the proportion equation
   250,708 : 388,388 = 388,388 : x
2. Step 2: Convert to fraction form
   250,708/388,388 = 388,388/x
3. Step 3: Cross multiply
   250,708x = 388,388 × 388,388
4. Step 4: Simplify right side
   250,708x = 150,845,238,544
5. Step 5: Solve for x
   x = 150,845,238,544/250,708
6. Step 6: Final answer
   x = 601,677.00