Finding the Third Proportional to 713,416 and 978,270

Step by Step Solution

1. Step 1: Write the proportion equation
   713,416 : 978,270 = 978,270 : x
2. Step 2: Convert to fraction form
   713,416/978,270 = 978,270/x
3. Step 3: Cross multiply
   713,416x = 978,270 × 978,270
4. Step 4: Simplify right side
   713,416x = 957,012,192,900
5. Step 5: Solve for x
   x = 957,012,192,900/713,416
6. Step 6: Final answer
   x = 1,341,450.42