Finding the Third Proportional to 105,456 and 227,040

Step by Step Solution

1. Step 1: Write the proportion equation
   105,456 : 227,040 = 227,040 : x
2. Step 2: Convert to fraction form
   105,456/227,040 = 227,040/x
3. Step 3: Cross multiply
   105,456x = 227,040 × 227,040
4. Step 4: Simplify right side
   105,456x = 51,547,161,600
5. Step 5: Solve for x
   x = 51,547,161,600/105,456
6. Step 6: Final answer
   x = 488,802.55