Finding the Third Proportional to 111,770 and 243,198

Step by Step Solution

1. Step 1: Write the proportion equation
   111,770 : 243,198 = 243,198 : x
2. Step 2: Convert to fraction form
   111,770/243,198 = 243,198/x
3. Step 3: Cross multiply
   111,770x = 243,198 × 243,198
4. Step 4: Simplify right side
   111,770x = 59,145,267,204
5. Step 5: Solve for x
   x = 59,145,267,204/111,770
6. Step 6: Final answer
   x = 529,169.43