Finding the Third Proportional to 10,455 and 14,884.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,455 : 14,884.50 = 14,884.50 : x
2. Step 2: Convert to fraction form
   10,455/14,884.50 = 14,884.50/x
3. Step 3: Cross multiply
   10,455x = 14,884.50 × 14,884.50
4. Step 4: Simplify right side
   10,455x = 221,548,340.25
5. Step 5: Solve for x
   x = 221,548,340.25/10,455
6. Step 6: Final answer
   x = 21,190.66