Finding the Third Proportional to 111,618 and 242,939.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,618 : 242,939.25 = 242,939.25 : x
2. Step 2: Convert to fraction form
   111,618/242,939.25 = 242,939.25/x
3. Step 3: Cross multiply
   111,618x = 242,939.25 × 242,939.25
4. Step 4: Simplify right side
   111,618x = 59,019,479,190.56
5. Step 5: Solve for x
   x = 59,019,479,190.56/111,618
6. Step 6: Final answer
   x = 528,763.10