Finding the Third Proportional to 1,366,617 and 2,121,549

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366,617 : 2,121,549 = 2,121,549 : x
2. Step 2: Convert to fraction form
   1,366,617/2,121,549 = 2,121,549/x
3. Step 3: Cross multiply
   1,366,617x = 2,121,549 × 2,121,549
4. Step 4: Simplify right side
   1,366,617x = 4,500,970,159,401
5. Step 5: Solve for x
   x = 4,500,970,159,401/1,366,617
6. Step 6: Final answer
   x = 3,293,512.49