Finding the Third Proportional to 2,431,384 and 5,290,879

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431,384 : 5,290,879 = 5,290,879 : x
2. Step 2: Convert to fraction form
   2,431,384/5,290,879 = 5,290,879/x
3. Step 3: Cross multiply
   2,431,384x = 5,290,879 × 5,290,879
4. Step 4: Simplify right side
   2,431,384x = 27,993,400,592,641
5. Step 5: Solve for x
   x = 27,993,400,592,641/2,431,384
6. Step 6: Final answer
   x = 11,513,360.54