Finding the Third Proportional to 457,131 and 714,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   457,131 : 714,820.50 = 714,820.50 : x
2. Step 2: Convert to fraction form
   457,131/714,820.50 = 714,820.50/x
3. Step 3: Cross multiply
   457,131x = 714,820.50 × 714,820.50
4. Step 4: Simplify right side
   457,131x = 510,968,347,220.25
5. Step 5: Solve for x
   x = 510,968,347,220.25/457,131
6. Step 6: Final answer
   x = 1,117,772.25