Finding the Third Proportional to 449,993 and 978,718

Step by Step Solution

1. Step 1: Write the proportion equation
   449,993 : 978,718 = 978,718 : x
2. Step 2: Convert to fraction form
   449,993/978,718 = 978,718/x
3. Step 3: Cross multiply
   449,993x = 978,718 × 978,718
4. Step 4: Simplify right side
   449,993x = 957,888,923,524
5. Step 5: Solve for x
   x = 957,888,923,524/449,993
6. Step 6: Final answer
   x = 2,128,675.17