Finding the Third Proportional to 250,702 and 388,380

Step by Step Solution

1. Step 1: Write the proportion equation
   250,702 : 388,380 = 388,380 : x
2. Step 2: Convert to fraction form
   250,702/388,380 = 388,380/x
3. Step 3: Cross multiply
   250,702x = 388,380 × 388,380
4. Step 4: Simplify right side
   250,702x = 150,839,024,400
5. Step 5: Solve for x
   x = 150,839,024,400/250,702
6. Step 6: Final answer
   x = 601,666.62