Finding the Third Proportional to 485,479.50 and 743,002.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,479.50 : 743,002.50 = 743,002.50 : x
2. Step 2: Convert to fraction form
   485,479.50/743,002.50 = 743,002.50/x
3. Step 3: Cross multiply
   485,479.50x = 743,002.50 × 743,002.50
4. Step 4: Simplify right side
   485,479.50x = 552,052,715,006.25
5. Step 5: Solve for x
   x = 552,052,715,006.25/485,479.50
6. Step 6: Final answer
   x = 1,137,128.79