Finding the Third Proportional to 2,591,471 and 5,638,727

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591,471 : 5,638,727 = 5,638,727 : x
2. Step 2: Convert to fraction form
   2,591,471/5,638,727 = 5,638,727/x
3. Step 3: Cross multiply
   2,591,471x = 5,638,727 × 5,638,727
4. Step 4: Simplify right side
   2,591,471x = 31,795,242,180,529
5. Step 5: Solve for x
   x = 31,795,242,180,529/2,591,471
6. Step 6: Final answer
   x = 12,269,186.95