Finding the Third Proportional to 713,446 and 978,315

Step by Step Solution

1. Step 1: Write the proportion equation
   713,446 : 978,315 = 978,315 : x
2. Step 2: Convert to fraction form
   713,446/978,315 = 978,315/x
3. Step 3: Cross multiply
   713,446x = 978,315 × 978,315
4. Step 4: Simplify right side
   713,446x = 957,100,239,225
5. Step 5: Solve for x
   x = 957,100,239,225/713,446
6. Step 6: Final answer
   x = 1,341,517.42