Finding the Third Proportional to 713,466 and 978,339

Step by Step Solution

1. Step 1: Write the proportion equation
   713,466 : 978,339 = 978,339 : x
2. Step 2: Convert to fraction form
   713,466/978,339 = 978,339/x
3. Step 3: Cross multiply
   713,466x = 978,339 × 978,339
4. Step 4: Simplify right side
   713,466x = 957,147,198,921
5. Step 5: Solve for x
   x = 957,147,198,921/713,466
6. Step 6: Final answer
   x = 1,341,545.64