Finding the Third Proportional to 2,557,017 and 5,512,553

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557,017 : 5,512,553 = 5,512,553 : x
2. Step 2: Convert to fraction form
   2,557,017/5,512,553 = 5,512,553/x
3. Step 3: Cross multiply
   2,557,017x = 5,512,553 × 5,512,553
4. Step 4: Simplify right side
   2,557,017x = 30,388,240,577,809
5. Step 5: Solve for x
   x = 30,388,240,577,809/2,557,017
6. Step 6: Final answer
   x = 11,884,254.42