Finding the Third Proportional to 111,919.50 and 243,504

Step by Step Solution

1. Step 1: Write the proportion equation
   111,919.50 : 243,504 = 243,504 : x
2. Step 2: Convert to fraction form
   111,919.50/243,504 = 243,504/x
3. Step 3: Cross multiply
   111,919.50x = 243,504 × 243,504
4. Step 4: Simplify right side
   111,919.50x = 59,294,198,016
5. Step 5: Solve for x
   x = 59,294,198,016/111,919.50
6. Step 6: Final answer
   x = 529,793.27