Finding the Third Proportional to 111,905 and 228,979

Step by Step Solution

1. Step 1: Write the proportion equation
   111,905 : 228,979 = 228,979 : x
2. Step 2: Convert to fraction form
   111,905/228,979 = 228,979/x
3. Step 3: Cross multiply
   111,905x = 228,979 × 228,979
4. Step 4: Simplify right side
   111,905x = 52,431,382,441
5. Step 5: Solve for x
   x = 52,431,382,441/111,905
6. Step 6: Final answer
   x = 468,534.76