Finding the Third Proportional to 10,557.50 and 16,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,557.50 : 16,716.50 = 16,716.50 : x
2. Step 2: Convert to fraction form
   10,557.50/16,716.50 = 16,716.50/x
3. Step 3: Cross multiply
   10,557.50x = 16,716.50 × 16,716.50
4. Step 4: Simplify right side
   10,557.50x = 279,441,372.25
5. Step 5: Solve for x
   x = 279,441,372.25/10,557.50
6. Step 6: Final answer
   x = 26,468.52