Finding the Third Proportional to 2,643,040 and 4,019,920

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643,040 : 4,019,920 = 4,019,920 : x
2. Step 2: Convert to fraction form
   2,643,040/4,019,920 = 4,019,920/x
3. Step 3: Cross multiply
   2,643,040x = 4,019,920 × 4,019,920
4. Step 4: Simplify right side
   2,643,040x = 16,159,756,806,400
5. Step 5: Solve for x
   x = 16,159,756,806,400/2,643,040
6. Step 6: Final answer
   x = 6,114,079.55