Finding the Third Proportional to 105,990 and 230,388

Step by Step Solution

1. Step 1: Write the proportion equation
   105,990 : 230,388 = 230,388 : x
2. Step 2: Convert to fraction form
   105,990/230,388 = 230,388/x
3. Step 3: Cross multiply
   105,990x = 230,388 × 230,388
4. Step 4: Simplify right side
   105,990x = 53,078,630,544
5. Step 5: Solve for x
   x = 53,078,630,544/105,990
6. Step 6: Final answer
   x = 500,789.04