Finding the Third Proportional to 143,491.50 and 200,611.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,491.50 : 200,611.69 = 200,611.69 : x
2. Step 2: Convert to fraction form
   143,491.50/200,611.69 = 200,611.69/x
3. Step 3: Cross multiply
   143,491.50x = 200,611.69 × 200,611.69
4. Step 4: Simplify right side
   143,491.50x = 40,245,049,161.60
5. Step 5: Solve for x
   x = 40,245,049,161.60/143,491.50
6. Step 6: Final answer
   x = 280,469.92