Finding the Third Proportional to 16,808.50 and 21,608

Step by Step Solution

1. Step 1: Write the proportion equation
   16,808.50 : 21,608 = 21,608 : x
2. Step 2: Convert to fraction form
   16,808.50/21,608 = 21,608/x
3. Step 3: Cross multiply
   16,808.50x = 21,608 × 21,608
4. Step 4: Simplify right side
   16,808.50x = 466,905,664
5. Step 5: Solve for x
   x = 466,905,664/16,808.50
6. Step 6: Final answer
   x = 27,777.95