Finding the Third Proportional to 250,383 and 388,287

Step by Step Solution

1. Step 1: Write the proportion equation
   250,383 : 388,287 = 388,287 : x
2. Step 2: Convert to fraction form
   250,383/388,287 = 388,287/x
3. Step 3: Cross multiply
   250,383x = 388,287 × 388,287
4. Step 4: Simplify right side
   250,383x = 150,766,794,369
5. Step 5: Solve for x
   x = 150,766,794,369/250,383
6. Step 6: Final answer
   x = 602,144.69