Finding the Third Proportional to 16,191 and 21,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,191 : 21,604.50 = 21,604.50 : x
2. Step 2: Convert to fraction form
   16,191/21,604.50 = 21,604.50/x
3. Step 3: Cross multiply
   16,191x = 21,604.50 × 21,604.50
4. Step 4: Simplify right side
   16,191x = 466,754,420.25
5. Step 5: Solve for x
   x = 466,754,420.25/16,191
6. Step 6: Final answer
   x = 28,828.02