Finding the Third Proportional to 449,939 and 978,610

Step by Step Solution

1. Step 1: Write the proportion equation
   449,939 : 978,610 = 978,610 : x
2. Step 2: Convert to fraction form
   449,939/978,610 = 978,610/x
3. Step 3: Cross multiply
   449,939x = 978,610 × 978,610
4. Step 4: Simplify right side
   449,939x = 957,677,532,100
5. Step 5: Solve for x
   x = 957,677,532,100/449,939
6. Step 6: Final answer
   x = 2,128,460.82