Finding the Third Proportional to 111,143 and 242,698

Step by Step Solution

1. Step 1: Write the proportion equation
   111,143 : 242,698 = 242,698 : x
2. Step 2: Convert to fraction form
   111,143/242,698 = 242,698/x
3. Step 3: Cross multiply
   111,143x = 242,698 × 242,698
4. Step 4: Simplify right side
   111,143x = 58,902,319,204
5. Step 5: Solve for x
   x = 58,902,319,204/111,143
6. Step 6: Final answer
   x = 529,968.77