Finding the Third Proportional to 713,488 and 978,374

Step by Step Solution

1. Step 1: Write the proportion equation
   713,488 : 978,374 = 978,374 : x
2. Step 2: Convert to fraction form
   713,488/978,374 = 978,374/x
3. Step 3: Cross multiply
   713,488x = 978,374 × 978,374
4. Step 4: Simplify right side
   713,488x = 957,215,683,876
5. Step 5: Solve for x
   x = 957,215,683,876/713,488
6. Step 6: Final answer
   x = 1,341,600.26