Finding the Third Proportional to 172,016 and 404,739

Step by Step Solution

1. Step 1: Write the proportion equation
   172,016 : 404,739 = 404,739 : x
2. Step 2: Convert to fraction form
   172,016/404,739 = 404,739/x
3. Step 3: Cross multiply
   172,016x = 404,739 × 404,739
4. Step 4: Simplify right side
   172,016x = 163,813,658,121
5. Step 5: Solve for x
   x = 163,813,658,121/172,016
6. Step 6: Final answer
   x = 952,316.40