Finding the Third Proportional to 2,409,840 and 5,239,512

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409,840 : 5,239,512 = 5,239,512 : x
2. Step 2: Convert to fraction form
   2,409,840/5,239,512 = 5,239,512/x
3. Step 3: Cross multiply
   2,409,840x = 5,239,512 × 5,239,512
4. Step 4: Simplify right side
   2,409,840x = 27,452,485,998,144
5. Step 5: Solve for x
   x = 27,452,485,998,144/2,409,840
6. Step 6: Final answer
   x = 11,391,829.33