Finding the Third Proportional to 486,729 and 726,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   486,729 : 726,043.50 = 726,043.50 : x
2. Step 2: Convert to fraction form
   486,729/726,043.50 = 726,043.50/x
3. Step 3: Cross multiply
   486,729x = 726,043.50 × 726,043.50
4. Step 4: Simplify right side
   486,729x = 527,139,163,892.25
5. Step 5: Solve for x
   x = 527,139,163,892.25/486,729
6. Step 6: Final answer
   x = 1,083,023.95