Finding the Third Proportional to 172,328 and 369,616

Step by Step Solution

1. Step 1: Write the proportion equation
   172,328 : 369,616 = 369,616 : x
2. Step 2: Convert to fraction form
   172,328/369,616 = 369,616/x
3. Step 3: Cross multiply
   172,328x = 369,616 × 369,616
4. Step 4: Simplify right side
   172,328x = 136,615,987,456
5. Step 5: Solve for x
   x = 136,615,987,456/172,328
6. Step 6: Final answer
   x = 792,767.21