Finding the Third Proportional to 713,586 and 978,508

Step by Step Solution

1. Step 1: Write the proportion equation
   713,586 : 978,508 = 978,508 : x
2. Step 2: Convert to fraction form
   713,586/978,508 = 978,508/x
3. Step 3: Cross multiply
   713,586x = 978,508 × 978,508
4. Step 4: Simplify right side
   713,586x = 957,477,906,064
5. Step 5: Solve for x
   x = 957,477,906,064/713,586
6. Step 6: Final answer
   x = 1,341,783.48