Finding the Third Proportional to 2,589,872 and 5,639,527

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,872 : 5,639,527 = 5,639,527 : x
2. Step 2: Convert to fraction form
   2,589,872/5,639,527 = 5,639,527/x
3. Step 3: Cross multiply
   2,589,872x = 5,639,527 × 5,639,527
4. Step 4: Simplify right side
   2,589,872x = 31,804,264,783,729
5. Step 5: Solve for x
   x = 31,804,264,783,729/2,589,872
6. Step 6: Final answer
   x = 12,280,245.81