Finding the Third Proportional to 2,836,585 and 4,257,780

Step by Step Solution

1. Step 1: Write the proportion equation
   2,836,585 : 4,257,780 = 4,257,780 : x
2. Step 2: Convert to fraction form
   2,836,585/4,257,780 = 4,257,780/x
3. Step 3: Cross multiply
   2,836,585x = 4,257,780 × 4,257,780
4. Step 4: Simplify right side
   2,836,585x = 18,128,690,528,400
5. Step 5: Solve for x
   x = 18,128,690,528,400/2,836,585
6. Step 6: Final answer
   x = 6,391,026.72