Finding the Third Proportional to 485,864 and 1,024,540

Step by Step Solution

1. Step 1: Write the proportion equation
   485,864 : 1,024,540 = 1,024,540 : x
2. Step 2: Convert to fraction form
   485,864/1,024,540 = 1,024,540/x
3. Step 3: Cross multiply
   485,864x = 1,024,540 × 1,024,540
4. Step 4: Simplify right side
   485,864x = 1,049,682,211,600
5. Step 5: Solve for x
   x = 1,049,682,211,600/485,864
6. Step 6: Final answer
   x = 2,160,444.51