Finding the Third Proportional to 485,851.50 and 714,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,851.50 : 714,559.50 = 714,559.50 : x
2. Step 2: Convert to fraction form
   485,851.50/714,559.50 = 714,559.50/x
3. Step 3: Cross multiply
   485,851.50x = 714,559.50 × 714,559.50
4. Step 4: Simplify right side
   485,851.50x = 510,595,279,040.25
5. Step 5: Solve for x
   x = 510,595,279,040.25/485,851.50
6. Step 6: Final answer
   x = 1,050,928.69