Finding the Third Proportional to 2,729,876 and 4,281,978

Step by Step Solution

1. Step 1: Write the proportion equation
   2,729,876 : 4,281,978 = 4,281,978 : x
2. Step 2: Convert to fraction form
   2,729,876/4,281,978 = 4,281,978/x
3. Step 3: Cross multiply
   2,729,876x = 4,281,978 × 4,281,978
4. Step 4: Simplify right side
   2,729,876x = 18,335,335,592,484
5. Step 5: Solve for x
   x = 18,335,335,592,484/2,729,876
6. Step 6: Final answer
   x = 6,716,545.22