Finding the Third Proportional to 449,645 and 978,607

Step by Step Solution

1. Step 1: Write the proportion equation
   449,645 : 978,607 = 978,607 : x
2. Step 2: Convert to fraction form
   449,645/978,607 = 978,607/x
3. Step 3: Cross multiply
   449,645x = 978,607 × 978,607
4. Step 4: Simplify right side
   449,645x = 957,671,660,449
5. Step 5: Solve for x
   x = 957,671,660,449/449,645
6. Step 6: Final answer
   x = 2,129,839.45