Finding the Third Proportional to 449,662 and 978,620

Step by Step Solution

1. Step 1: Write the proportion equation
   449,662 : 978,620 = 978,620 : x
2. Step 2: Convert to fraction form
   449,662/978,620 = 978,620/x
3. Step 3: Cross multiply
   449,662x = 978,620 × 978,620
4. Step 4: Simplify right side
   449,662x = 957,697,104,400
5. Step 5: Solve for x
   x = 957,697,104,400/449,662
6. Step 6: Final answer
   x = 2,129,815.52