Finding the Third Proportional to 10,559.50 and 16,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,559.50 : 16,719.50 = 16,719.50 : x
2. Step 2: Convert to fraction form
   10,559.50/16,719.50 = 16,719.50/x
3. Step 3: Cross multiply
   10,559.50x = 16,719.50 × 16,719.50
4. Step 4: Simplify right side
   10,559.50x = 279,541,680.25
5. Step 5: Solve for x
   x = 279,541,680.25/10,559.50
6. Step 6: Final answer
   x = 26,473.00