Finding the Third Proportional to 713,686 and 978,630

Step by Step Solution

1. Step 1: Write the proportion equation
   713,686 : 978,630 = 978,630 : x
2. Step 2: Convert to fraction form
   713,686/978,630 = 978,630/x
3. Step 3: Cross multiply
   713,686x = 978,630 × 978,630
4. Step 4: Simplify right side
   713,686x = 957,716,676,900
5. Step 5: Solve for x
   x = 957,716,676,900/713,686
6. Step 6: Final answer
   x = 1,341,930.03