Finding the Third Proportional to 111,958 and 236,555

Step by Step Solution

1. Step 1: Write the proportion equation
   111,958 : 236,555 = 236,555 : x
2. Step 2: Convert to fraction form
   111,958/236,555 = 236,555/x
3. Step 3: Cross multiply
   111,958x = 236,555 × 236,555
4. Step 4: Simplify right side
   111,958x = 55,958,268,025
5. Step 5: Solve for x
   x = 55,958,268,025/111,958
6. Step 6: Final answer
   x = 499,814.82