Finding the Third Proportional to 111,338.50 and 233,618

Step by Step Solution

1. Step 1: Write the proportion equation
   111,338.50 : 233,618 = 233,618 : x
2. Step 2: Convert to fraction form
   111,338.50/233,618 = 233,618/x
3. Step 3: Cross multiply
   111,338.50x = 233,618 × 233,618
4. Step 4: Simplify right side
   111,338.50x = 54,577,369,924
5. Step 5: Solve for x
   x = 54,577,369,924/111,338.50
6. Step 6: Final answer
   x = 490,193.15