Finding the Third Proportional to 449,651 and 978,600

Step by Step Solution

1. Step 1: Write the proportion equation
   449,651 : 978,600 = 978,600 : x
2. Step 2: Convert to fraction form
   449,651/978,600 = 978,600/x
3. Step 3: Cross multiply
   449,651x = 978,600 × 978,600
4. Step 4: Simplify right side
   449,651x = 957,657,960,000
5. Step 5: Solve for x
   x = 957,657,960,000/449,651
6. Step 6: Final answer
   x = 2,129,780.56