Finding the Third Proportional to 111,978 and 242,010

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978 : 242,010 = 242,010 : x
2. Step 2: Convert to fraction form
   111,978/242,010 = 242,010/x
3. Step 3: Cross multiply
   111,978x = 242,010 × 242,010
4. Step 4: Simplify right side
   111,978x = 58,568,840,100
5. Step 5: Solve for x
   x = 58,568,840,100/111,978
6. Step 6: Final answer
   x = 523,038.81