Finding the Third Proportional to 713,445 and 978,308

Step by Step Solution

1. Step 1: Write the proportion equation
   713,445 : 978,308 = 978,308 : x
2. Step 2: Convert to fraction form
   713,445/978,308 = 978,308/x
3. Step 3: Cross multiply
   713,445x = 978,308 × 978,308
4. Step 4: Simplify right side
   713,445x = 957,086,542,864
5. Step 5: Solve for x
   x = 957,086,542,864/713,445
6. Step 6: Final answer
   x = 1,341,500.11