Finding the Third Proportional to 1,017,408 and 2,211,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017,408 : 2,211,780 = 2,211,780 : x
2. Step 2: Convert to fraction form
   1,017,408/2,211,780 = 2,211,780/x
3. Step 3: Cross multiply
   1,017,408x = 2,211,780 × 2,211,780
4. Step 4: Simplify right side
   1,017,408x = 4,891,970,768,400
5. Step 5: Solve for x
   x = 4,891,970,768,400/1,017,408
6. Step 6: Final answer
   x = 4,808,268.43