Finding the Third Proportional to 713,516 and 978,418

Step by Step Solution

1. Step 1: Write the proportion equation
   713,516 : 978,418 = 978,418 : x
2. Step 2: Convert to fraction form
   713,516/978,418 = 978,418/x
3. Step 3: Cross multiply
   713,516x = 978,418 × 978,418
4. Step 4: Simplify right side
   713,516x = 957,301,782,724
5. Step 5: Solve for x
   x = 957,301,782,724/713,516
6. Step 6: Final answer
   x = 1,341,668.28