Finding the Third Proportional to 1,265,774 and 2,578,549

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265,774 : 2,578,549 = 2,578,549 : x
2. Step 2: Convert to fraction form
   1,265,774/2,578,549 = 2,578,549/x
3. Step 3: Cross multiply
   1,265,774x = 2,578,549 × 2,578,549
4. Step 4: Simplify right side
   1,265,774x = 6,648,914,945,401
5. Step 5: Solve for x
   x = 6,648,914,945,401/1,265,774
6. Step 6: Final answer
   x = 5,252,845.25