Finding the Third Proportional to 2,589,876 and 5,639,535

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,876 : 5,639,535 = 5,639,535 : x
2. Step 2: Convert to fraction form
   2,589,876/5,639,535 = 5,639,535/x
3. Step 3: Cross multiply
   2,589,876x = 5,639,535 × 5,639,535
4. Step 4: Simplify right side
   2,589,876x = 31,804,355,016,225
5. Step 5: Solve for x
   x = 31,804,355,016,225/2,589,876
6. Step 6: Final answer
   x = 12,280,261.69