Finding the Third Proportional to 486,780 and 1,065,320

Step by Step Solution

1. Step 1: Write the proportion equation
   486,780 : 1,065,320 = 1,065,320 : x
2. Step 2: Convert to fraction form
   486,780/1,065,320 = 1,065,320/x
3. Step 3: Cross multiply
   486,780x = 1,065,320 × 1,065,320
4. Step 4: Simplify right side
   486,780x = 1,134,906,702,400
5. Step 5: Solve for x
   x = 1,134,906,702,400/486,780
6. Step 6: Final answer
   x = 2,331,457.13