Finding the Third Proportional to 109,123.50 and 168,186

Step by Step Solution

1. Step 1: Write the proportion equation
   109,123.50 : 168,186 = 168,186 : x
2. Step 2: Convert to fraction form
   109,123.50/168,186 = 168,186/x
3. Step 3: Cross multiply
   109,123.50x = 168,186 × 168,186
4. Step 4: Simplify right side
   109,123.50x = 28,286,530,596
5. Step 5: Solve for x
   x = 28,286,530,596/109,123.50
6. Step 6: Final answer
   x = 259,215.76