Finding the Third Proportional to 654,872 and 978,268

Step by Step Solution

1. Step 1: Write the proportion equation
   654,872 : 978,268 = 978,268 : x
2. Step 2: Convert to fraction form
   654,872/978,268 = 978,268/x
3. Step 3: Cross multiply
   654,872x = 978,268 × 978,268
4. Step 4: Simplify right side
   654,872x = 957,008,279,824
5. Step 5: Solve for x
   x = 957,008,279,824/654,872
6. Step 6: Final answer
   x = 1,461,366.92