Finding the Third Proportional to 3,913.50 and 8,573.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913.50 : 8,573.25 = 8,573.25 : x
2. Step 2: Convert to fraction form
   3,913.50/8,573.25 = 8,573.25/x
3. Step 3: Cross multiply
   3,913.50x = 8,573.25 × 8,573.25
4. Step 4: Simplify right side
   3,913.50x = 73,500,615.56
5. Step 5: Solve for x
   x = 73,500,615.56/3,913.50
6. Step 6: Final answer
   x = 18,781.30