Finding the Third Proportional to 111,229.50 and 168,147

Step by Step Solution

1. Step 1: Write the proportion equation
   111,229.50 : 168,147 = 168,147 : x
2. Step 2: Convert to fraction form
   111,229.50/168,147 = 168,147/x
3. Step 3: Cross multiply
   111,229.50x = 168,147 × 168,147
4. Step 4: Simplify right side
   111,229.50x = 28,273,413,609
5. Step 5: Solve for x
   x = 28,273,413,609/111,229.50
6. Step 6: Final answer
   x = 254,189.88