Finding the Third Proportional to 315,792 and 457,103.25

Step by Step Solution

1. Step 1: Write the proportion equation
   315,792 : 457,103.25 = 457,103.25 : x
2. Step 2: Convert to fraction form
   315,792/457,103.25 = 457,103.25/x
3. Step 3: Cross multiply
   315,792x = 457,103.25 × 457,103.25
4. Step 4: Simplify right side
   315,792x = 208,943,381,160.56
5. Step 5: Solve for x
   x = 208,943,381,160.56/315,792
6. Step 6: Final answer
   x = 661,648.75