Finding the Third Proportional to 107,911.50 and 220,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107,911.50 : 220,105.50 = 220,105.50 : x
2. Step 2: Convert to fraction form
   107,911.50/220,105.50 = 220,105.50/x
3. Step 3: Cross multiply
   107,911.50x = 220,105.50 × 220,105.50
4. Step 4: Simplify right side
   107,911.50x = 48,446,431,130.25
5. Step 5: Solve for x
   x = 48,446,431,130.25/107,911.50
6. Step 6: Final answer
   x = 448,945.95