Finding the Third Proportional to 2,490,017 and 5,438,818

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490,017 : 5,438,818 = 5,438,818 : x
2. Step 2: Convert to fraction form
   2,490,017/5,438,818 = 5,438,818/x
3. Step 3: Cross multiply
   2,490,017x = 5,438,818 × 5,438,818
4. Step 4: Simplify right side
   2,490,017x = 29,580,741,237,124
5. Step 5: Solve for x
   x = 29,580,741,237,124/2,490,017
6. Step 6: Final answer
   x = 11,879,734.65