Finding the Third Proportional to 105,328.13 and 225,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,328.13 : 225,418.50 = 225,418.50 : x
2. Step 2: Convert to fraction form
   105,328.13/225,418.50 = 225,418.50/x
3. Step 3: Cross multiply
   105,328.13x = 225,418.50 × 225,418.50
4. Step 4: Simplify right side
   105,328.13x = 50,813,500,142.25
5. Step 5: Solve for x
   x = 50,813,500,142.25/105,328.13
6. Step 6: Final answer
   x = 482,430.50