Finding the Third Proportional to 172,864 and 375,240

Step by Step Solution

1. Step 1: Write the proportion equation
   172,864 : 375,240 = 375,240 : x
2. Step 2: Convert to fraction form
   172,864/375,240 = 375,240/x
3. Step 3: Cross multiply
   172,864x = 375,240 × 375,240
4. Step 4: Simplify right side
   172,864x = 140,805,057,600
5. Step 5: Solve for x
   x = 140,805,057,600/172,864
6. Step 6: Final answer
   x = 814,542.40