Finding the Third Proportional to 449,943 and 978,618

Step by Step Solution

1. Step 1: Write the proportion equation
   449,943 : 978,618 = 978,618 : x
2. Step 2: Convert to fraction form
   449,943/978,618 = 978,618/x
3. Step 3: Cross multiply
   449,943x = 978,618 × 978,618
4. Step 4: Simplify right side
   449,943x = 957,693,189,924
5. Step 5: Solve for x
   x = 957,693,189,924/449,943
6. Step 6: Final answer
   x = 2,128,476.70