Finding the Third Proportional to 1,338,857 and 2,943,401

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,857 : 2,943,401 = 2,943,401 : x
2. Step 2: Convert to fraction form
   1,338,857/2,943,401 = 2,943,401/x
3. Step 3: Cross multiply
   1,338,857x = 2,943,401 × 2,943,401
4. Step 4: Simplify right side
   1,338,857x = 8,663,609,446,801
5. Step 5: Solve for x
   x = 8,663,609,446,801/1,338,857
6. Step 6: Final answer
   x = 6,470,899.77