Finding the Third Proportional to 1,728,491 and 2,616,618

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728,491 : 2,616,618 = 2,616,618 : x
2. Step 2: Convert to fraction form
   1,728,491/2,616,618 = 2,616,618/x
3. Step 3: Cross multiply
   1,728,491x = 2,616,618 × 2,616,618
4. Step 4: Simplify right side
   1,728,491x = 6,846,689,757,924
5. Step 5: Solve for x
   x = 6,846,689,757,924/1,728,491
6. Step 6: Final answer
   x = 3,961,079.21