Finding the Third Proportional to 713,578 and 978,496

Step by Step Solution

1. Step 1: Write the proportion equation
   713,578 : 978,496 = 978,496 : x
2. Step 2: Convert to fraction form
   713,578/978,496 = 978,496/x
3. Step 3: Cross multiply
   713,578x = 978,496 × 978,496
4. Step 4: Simplify right side
   713,578x = 957,454,422,016
5. Step 5: Solve for x
   x = 957,454,422,016/713,578
6. Step 6: Final answer
   x = 1,341,765.61