Finding the Third Proportional to 105,711.25 and 221,802.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,711.25 : 221,802.25 = 221,802.25 : x
2. Step 2: Convert to fraction form
   105,711.25/221,802.25 = 221,802.25/x
3. Step 3: Cross multiply
   105,711.25x = 221,802.25 × 221,802.25
4. Step 4: Simplify right side
   105,711.25x = 49,196,238,105.06
5. Step 5: Solve for x
   x = 49,196,238,105.06/105,711.25
6. Step 6: Final answer
   x = 465,383.18