Finding the Third Proportional to 713,456 and 978,328

Step by Step Solution

1. Step 1: Write the proportion equation
   713,456 : 978,328 = 978,328 : x
2. Step 2: Convert to fraction form
   713,456/978,328 = 978,328/x
3. Step 3: Cross multiply
   713,456x = 978,328 × 978,328
4. Step 4: Simplify right side
   713,456x = 957,125,675,584
5. Step 5: Solve for x
   x = 957,125,675,584/713,456
6. Step 6: Final answer
   x = 1,341,534.27