Finding the Third Proportional to 105,228 and 225,216

Step by Step Solution

1. Step 1: Write the proportion equation
   105,228 : 225,216 = 225,216 : x
2. Step 2: Convert to fraction form
   105,228/225,216 = 225,216/x
3. Step 3: Cross multiply
   105,228x = 225,216 × 225,216
4. Step 4: Simplify right side
   105,228x = 50,722,246,656
5. Step 5: Solve for x
   x = 50,722,246,656/105,228
6. Step 6: Final answer
   x = 482,022.34