Finding the Third Proportional to 485,870.91 and 762,112.55

Step by Step Solution

1. Step 1: Write the proportion equation
   485,870.91 : 762,112.55 = 762,112.55 : x
2. Step 2: Convert to fraction form
   485,870.91/762,112.55 = 762,112.55/x
3. Step 3: Cross multiply
   485,870.91x = 762,112.55 × 762,112.55
4. Step 4: Simplify right side
   485,870.91x = 580,815,534,104.30
5. Step 5: Solve for x
   x = 580,815,534,104.30/485,870.91
6. Step 6: Final answer
   x = 1,195,411.22