Finding the Third Proportional to 518,184 and 1,221,468

Step by Step Solution

1. Step 1: Write the proportion equation
   518,184 : 1,221,468 = 1,221,468 : x
2. Step 2: Convert to fraction form
   518,184/1,221,468 = 1,221,468/x
3. Step 3: Cross multiply
   518,184x = 1,221,468 × 1,221,468
4. Step 4: Simplify right side
   518,184x = 1,491,984,075,024
5. Step 5: Solve for x
   x = 1,491,984,075,024/518,184
6. Step 6: Final answer
   x = 2,879,255.39