Finding the Third Proportional to 713,660 and 978,591

Step by Step Solution

1. Step 1: Write the proportion equation
   713,660 : 978,591 = 978,591 : x
2. Step 2: Convert to fraction form
   713,660/978,591 = 978,591/x
3. Step 3: Cross multiply
   713,660x = 978,591 × 978,591
4. Step 4: Simplify right side
   713,660x = 957,640,345,281
5. Step 5: Solve for x
   x = 957,640,345,281/713,660
6. Step 6: Final answer
   x = 1,341,871.96