Finding the Third Proportional to 3,889.69 and 8,240.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,889.69 : 8,240.06 = 8,240.06 : x
2. Step 2: Convert to fraction form
   3,889.69/8,240.06 = 8,240.06/x
3. Step 3: Cross multiply
   3,889.69x = 8,240.06 × 8,240.06
4. Step 4: Simplify right side
   3,889.69x = 67,898,630.00
5. Step 5: Solve for x
   x = 67,898,630.00/3,889.69
6. Step 6: Final answer
   x = 17,456.06