Finding the Third Proportional to 449,977 and 978,686

Step by Step Solution

1. Step 1: Write the proportion equation
   449,977 : 978,686 = 978,686 : x
2. Step 2: Convert to fraction form
   449,977/978,686 = 978,686/x
3. Step 3: Cross multiply
   449,977x = 978,686 × 978,686
4. Step 4: Simplify right side
   449,977x = 957,826,286,596
5. Step 5: Solve for x
   x = 957,826,286,596/449,977
6. Step 6: Final answer
   x = 2,128,611.65