Finding the Third Proportional to 111,570 and 234,618

Step by Step Solution

1. Step 1: Write the proportion equation
   111,570 : 234,618 = 234,618 : x
2. Step 2: Convert to fraction form
   111,570/234,618 = 234,618/x
3. Step 3: Cross multiply
   111,570x = 234,618 × 234,618
4. Step 4: Simplify right side
   111,570x = 55,045,605,924
5. Step 5: Solve for x
   x = 55,045,605,924/111,570
6. Step 6: Final answer
   x = 493,372.82