Finding the Third Proportional to 67,243.50 and 134,500.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,243.50 : 134,500.50 = 134,500.50 : x
2. Step 2: Convert to fraction form
   67,243.50/134,500.50 = 134,500.50/x
3. Step 3: Cross multiply
   67,243.50x = 134,500.50 × 134,500.50
4. Step 4: Simplify right side
   67,243.50x = 18,090,384,500.25
5. Step 5: Solve for x
   x = 18,090,384,500.25/67,243.50
6. Step 6: Final answer
   x = 269,028.00