Finding the Third Proportional to 713,570 and 978,510

Step by Step Solution

1. Step 1: Write the proportion equation
   713,570 : 978,510 = 978,510 : x
2. Step 2: Convert to fraction form
   713,570/978,510 = 978,510/x
3. Step 3: Cross multiply
   713,570x = 978,510 × 978,510
4. Step 4: Simplify right side
   713,570x = 957,481,820,100
5. Step 5: Solve for x
   x = 957,481,820,100/713,570
6. Step 6: Final answer
   x = 1,341,819.05