Finding the Third Proportional to 2,591,479.75 and 5,638,744

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591,479.75 : 5,638,744 = 5,638,744 : x
2. Step 2: Convert to fraction form
   2,591,479.75/5,638,744 = 5,638,744/x
3. Step 3: Cross multiply
   2,591,479.75x = 5,638,744 × 5,638,744
4. Step 4: Simplify right side
   2,591,479.75x = 31,795,433,897,536
5. Step 5: Solve for x
   x = 31,795,433,897,536/2,591,479.75
6. Step 6: Final answer
   x = 12,269,219.51