Finding the Third Proportional to 3,661.50 and 7,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.50 : 7,141.50 = 7,141.50 : x
2. Step 2: Convert to fraction form
   3,661.50/7,141.50 = 7,141.50/x
3. Step 3: Cross multiply
   3,661.50x = 7,141.50 × 7,141.50
4. Step 4: Simplify right side
   3,661.50x = 51,001,022.25
5. Step 5: Solve for x
   x = 51,001,022.25/3,661.50
6. Step 6: Final answer
   x = 13,929.00