Finding the Third Proportional to 485,433.89 and 728,150.91

Step by Step Solution

1. Step 1: Write the proportion equation
   485,433.89 : 728,150.91 = 728,150.91 : x
2. Step 2: Convert to fraction form
   485,433.89/728,150.91 = 728,150.91/x
3. Step 3: Cross multiply
   485,433.89x = 728,150.91 × 728,150.91
4. Step 4: Simplify right side
   485,433.89x = 530,203,742,272.70
5. Step 5: Solve for x
   x = 530,203,742,272.70/485,433.89
6. Step 6: Final answer
   x = 1,092,226.46