Finding the Third Proportional to 250,584 and 388,605

Step by Step Solution

1. Step 1: Write the proportion equation
   250,584 : 388,605 = 388,605 : x
2. Step 2: Convert to fraction form
   250,584/388,605 = 388,605/x
3. Step 3: Cross multiply
   250,584x = 388,605 × 388,605
4. Step 4: Simplify right side
   250,584x = 151,013,846,025
5. Step 5: Solve for x
   x = 151,013,846,025/250,584
6. Step 6: Final answer
   x = 602,647.60