Finding the Third Proportional to 6,685.50 and 10,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,685.50 : 10,516.50 = 10,516.50 : x
2. Step 2: Convert to fraction form
   6,685.50/10,516.50 = 10,516.50/x
3. Step 3: Cross multiply
   6,685.50x = 10,516.50 × 10,516.50
4. Step 4: Simplify right side
   6,685.50x = 110,596,772.25
5. Step 5: Solve for x
   x = 110,596,772.25/6,685.50
6. Step 6: Final answer
   x = 16,542.78