Finding the Third Proportional to 2,488,809 and 5,318,790

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488,809 : 5,318,790 = 5,318,790 : x
2. Step 2: Convert to fraction form
   2,488,809/5,318,790 = 5,318,790/x
3. Step 3: Cross multiply
   2,488,809x = 5,318,790 × 5,318,790
4. Step 4: Simplify right side
   2,488,809x = 28,289,527,064,100
5. Step 5: Solve for x
   x = 28,289,527,064,100/2,488,809
6. Step 6: Final answer
   x = 11,366,692.69