Finding the Third Proportional to 2,589,862 and 5,639,507

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,862 : 5,639,507 = 5,639,507 : x
2. Step 2: Convert to fraction form
   2,589,862/5,639,507 = 5,639,507/x
3. Step 3: Cross multiply
   2,589,862x = 5,639,507 × 5,639,507
4. Step 4: Simplify right side
   2,589,862x = 31,804,039,203,049
5. Step 5: Solve for x
   x = 31,804,039,203,049/2,589,862
6. Step 6: Final answer
   x = 12,280,206.13