Finding the Third Proportional to 2,605,408 and 5,656,440

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605,408 : 5,656,440 = 5,656,440 : x
2. Step 2: Convert to fraction form
   2,605,408/5,656,440 = 5,656,440/x
3. Step 3: Cross multiply
   2,605,408x = 5,656,440 × 5,656,440
4. Step 4: Simplify right side
   2,605,408x = 31,995,313,473,600
5. Step 5: Solve for x
   x = 31,995,313,473,600/2,605,408
6. Step 6: Final answer
   x = 12,280,346.68