Finding the Third Proportional to 713,477 and 978,355

Step by Step Solution

1. Step 1: Write the proportion equation
   713,477 : 978,355 = 978,355 : x
2. Step 2: Convert to fraction form
   713,477/978,355 = 978,355/x
3. Step 3: Cross multiply
   713,477x = 978,355 × 978,355
4. Step 4: Simplify right side
   713,477x = 957,178,506,025
5. Step 5: Solve for x
   x = 957,178,506,025/713,477
6. Step 6: Final answer
   x = 1,341,568.83