Finding the Third Proportional to 1,359,891 and 2,122,618

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359,891 : 2,122,618 = 2,122,618 : x
2. Step 2: Convert to fraction form
   1,359,891/2,122,618 = 2,122,618/x
3. Step 3: Cross multiply
   1,359,891x = 2,122,618 × 2,122,618
4. Step 4: Simplify right side
   1,359,891x = 4,505,507,173,924
5. Step 5: Solve for x
   x = 4,505,507,173,924/1,359,891
6. Step 6: Final answer
   x = 3,313,138.46