Finding the Third Proportional to 2,679,878 and 5,779,912

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679,878 : 5,779,912 = 5,779,912 : x
2. Step 2: Convert to fraction form
   2,679,878/5,779,912 = 5,779,912/x
3. Step 3: Cross multiply
   2,679,878x = 5,779,912 × 5,779,912
4. Step 4: Simplify right side
   2,679,878x = 33,407,382,727,744
5. Step 5: Solve for x
   x = 33,407,382,727,744/2,679,878
6. Step 6: Final answer
   x = 12,466,008.80