Finding the Third Proportional to 449,658 and 978,612

Step by Step Solution

1. Step 1: Write the proportion equation
   449,658 : 978,612 = 978,612 : x
2. Step 2: Convert to fraction form
   449,658/978,612 = 978,612/x
3. Step 3: Cross multiply
   449,658x = 978,612 × 978,612
4. Step 4: Simplify right side
   449,658x = 957,681,446,544
5. Step 5: Solve for x
   x = 957,681,446,544/449,658
6. Step 6: Final answer
   x = 2,129,799.64