Finding the Third Proportional to 111,240 and 229,860

Step by Step Solution

1. Step 1: Write the proportion equation
   111,240 : 229,860 = 229,860 : x
2. Step 2: Convert to fraction form
   111,240/229,860 = 229,860/x
3. Step 3: Cross multiply
   111,240x = 229,860 × 229,860
4. Step 4: Simplify right side
   111,240x = 52,835,619,600
5. Step 5: Solve for x
   x = 52,835,619,600/111,240
6. Step 6: Final answer
   x = 474,969.61