Finding the Third Proportional to 713,443 and 978,305

Step by Step Solution

1. Step 1: Write the proportion equation
   713,443 : 978,305 = 978,305 : x
2. Step 2: Convert to fraction form
   713,443/978,305 = 978,305/x
3. Step 3: Cross multiply
   713,443x = 978,305 × 978,305
4. Step 4: Simplify right side
   713,443x = 957,080,673,025
5. Step 5: Solve for x
   x = 957,080,673,025/713,443
6. Step 6: Final answer
   x = 1,341,495.64