Finding the Third Proportional to 2,690,146 and 5,819,879

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690,146 : 5,819,879 = 5,819,879 : x
2. Step 2: Convert to fraction form
   2,690,146/5,819,879 = 5,819,879/x
3. Step 3: Cross multiply
   2,690,146x = 5,819,879 × 5,819,879
4. Step 4: Simplify right side
   2,690,146x = 33,870,991,574,641
5. Step 5: Solve for x
   x = 33,870,991,574,641/2,690,146
6. Step 6: Final answer
   x = 12,590,763.32