Finding the Third Proportional to 486,404 and 777,033.50

Step by Step Solution

1. Step 1: Write the proportion equation
   486,404 : 777,033.50 = 777,033.50 : x
2. Step 2: Convert to fraction form
   486,404/777,033.50 = 777,033.50/x
3. Step 3: Cross multiply
   486,404x = 777,033.50 × 777,033.50
4. Step 4: Simplify right side
   486,404x = 603,781,060,122.25
5. Step 5: Solve for x
   x = 603,781,060,122.25/486,404
6. Step 6: Final answer
   x = 1,241,315.98