Finding the Third Proportional to 108,805.50 and 168,138

Step by Step Solution

1. Step 1: Write the proportion equation
   108,805.50 : 168,138 = 168,138 : x
2. Step 2: Convert to fraction form
   108,805.50/168,138 = 168,138/x
3. Step 3: Cross multiply
   108,805.50x = 168,138 × 168,138
4. Step 4: Simplify right side
   108,805.50x = 28,270,387,044
5. Step 5: Solve for x
   x = 28,270,387,044/108,805.50
6. Step 6: Final answer
   x = 259,824.98