Finding the Third Proportional to 250,414 and 590,540

Step by Step Solution

1. Step 1: Write the proportion equation
   250,414 : 590,540 = 590,540 : x
2. Step 2: Convert to fraction form
   250,414/590,540 = 590,540/x
3. Step 3: Cross multiply
   250,414x = 590,540 × 590,540
4. Step 4: Simplify right side
   250,414x = 348,737,491,600
5. Step 5: Solve for x
   x = 348,737,491,600/250,414
6. Step 6: Final answer
   x = 1,392,643.75