Finding the Third Proportional to 713,430 and 978,291

Step by Step Solution

1. Step 1: Write the proportion equation
   713,430 : 978,291 = 978,291 : x
2. Step 2: Convert to fraction form
   713,430/978,291 = 978,291/x
3. Step 3: Cross multiply
   713,430x = 978,291 × 978,291
4. Step 4: Simplify right side
   713,430x = 957,053,280,681
5. Step 5: Solve for x
   x = 957,053,280,681/713,430
6. Step 6: Final answer
   x = 1,341,481.69