Finding the Third Proportional to 3,408,638 and 5,426,435

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408,638 : 5,426,435 = 5,426,435 : x
2. Step 2: Convert to fraction form
   3,408,638/5,426,435 = 5,426,435/x
3. Step 3: Cross multiply
   3,408,638x = 5,426,435 × 5,426,435
4. Step 4: Simplify right side
   3,408,638x = 29,446,196,809,225
5. Step 5: Solve for x
   x = 29,446,196,809,225/3,408,638
6. Step 6: Final answer
   x = 8,638,698.74