Finding the Third Proportional to 1,638,524 and 3,355,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,524 : 3,355,780 = 3,355,780 : x
2. Step 2: Convert to fraction form
   1,638,524/3,355,780 = 3,355,780/x
3. Step 3: Cross multiply
   1,638,524x = 3,355,780 × 3,355,780
4. Step 4: Simplify right side
   1,638,524x = 11,261,259,408,400
5. Step 5: Solve for x
   x = 11,261,259,408,400/1,638,524
6. Step 6: Final answer
   x = 6,872,807.12