Finding the Third Proportional to 454,476 and 978,720

Step by Step Solution

1. Step 1: Write the proportion equation
   454,476 : 978,720 = 978,720 : x
2. Step 2: Convert to fraction form
   454,476/978,720 = 978,720/x
3. Step 3: Cross multiply
   454,476x = 978,720 × 978,720
4. Step 4: Simplify right side
   454,476x = 957,892,838,400
5. Step 5: Solve for x
   x = 957,892,838,400/454,476
6. Step 6: Final answer
   x = 2,107,686.30