Finding the Third Proportional to 713,496 and 978,388

Step by Step Solution

1. Step 1: Write the proportion equation
   713,496 : 978,388 = 978,388 : x
2. Step 2: Convert to fraction form
   713,496/978,388 = 978,388/x
3. Step 3: Cross multiply
   713,496x = 978,388 × 978,388
4. Step 4: Simplify right side
   713,496x = 957,243,078,544
5. Step 5: Solve for x
   x = 957,243,078,544/713,496
6. Step 6: Final answer
   x = 1,341,623.61