Finding the Third Proportional to 444,880 and 978,320

Step by Step Solution

1. Step 1: Write the proportion equation
   444,880 : 978,320 = 978,320 : x
2. Step 2: Convert to fraction form
   444,880/978,320 = 978,320/x
3. Step 3: Cross multiply
   444,880x = 978,320 × 978,320
4. Step 4: Simplify right side
   444,880x = 957,110,022,400
5. Step 5: Solve for x
   x = 957,110,022,400/444,880
6. Step 6: Final answer
   x = 2,151,389.19