Finding the Third Proportional to 713,618 and 978,556

Step by Step Solution

1. Step 1: Write the proportion equation
   713,618 : 978,556 = 978,556 : x
2. Step 2: Convert to fraction form
   713,618/978,556 = 978,556/x
3. Step 3: Cross multiply
   713,618x = 978,556 × 978,556
4. Step 4: Simplify right side
   713,618x = 957,571,845,136
5. Step 5: Solve for x
   x = 957,571,845,136/713,618
6. Step 6: Final answer
   x = 1,341,854.95