Finding the Third Proportional to 2,589,849 and 5,639,481

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,849 : 5,639,481 = 5,639,481 : x
2. Step 2: Convert to fraction form
   2,589,849/5,639,481 = 5,639,481/x
3. Step 3: Cross multiply
   2,589,849x = 5,639,481 × 5,639,481
4. Step 4: Simplify right side
   2,589,849x = 31,803,745,949,361
5. Step 5: Solve for x
   x = 31,803,745,949,361/2,589,849
6. Step 6: Final answer
   x = 12,280,154.54