Finding the Third Proportional to 326,390 and 717,016

Step by Step Solution

1. Step 1: Write the proportion equation
   326,390 : 717,016 = 717,016 : x
2. Step 2: Convert to fraction form
   326,390/717,016 = 717,016/x
3. Step 3: Cross multiply
   326,390x = 717,016 × 717,016
4. Step 4: Simplify right side
   326,390x = 514,111,944,256
5. Step 5: Solve for x
   x = 514,111,944,256/326,390
6. Step 6: Final answer
   x = 1,575,146.13