Finding the Third Proportional to 713,828 and 978,816

Step by Step Solution

1. Step 1: Write the proportion equation
   713,828 : 978,816 = 978,816 : x
2. Step 2: Convert to fraction form
   713,828/978,816 = 978,816/x
3. Step 3: Cross multiply
   713,828x = 978,816 × 978,816
4. Step 4: Simplify right side
   713,828x = 958,080,761,856
5. Step 5: Solve for x
   x = 958,080,761,856/713,828
6. Step 6: Final answer
   x = 1,342,173.13