Finding the Third Proportional to 2,557,015 and 5,512,549

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557,015 : 5,512,549 = 5,512,549 : x
2. Step 2: Convert to fraction form
   2,557,015/5,512,549 = 5,512,549/x
3. Step 3: Cross multiply
   2,557,015x = 5,512,549 × 5,512,549
4. Step 4: Simplify right side
   2,557,015x = 30,388,196,477,401
5. Step 5: Solve for x
   x = 30,388,196,477,401/2,557,015
6. Step 6: Final answer
   x = 11,884,246.47