Finding the Third Proportional to 12,189 and 16,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189 : 16,300.50 = 16,300.50 : x
2. Step 2: Convert to fraction form
   12,189/16,300.50 = 16,300.50/x
3. Step 3: Cross multiply
   12,189x = 16,300.50 × 16,300.50
4. Step 4: Simplify right side
   12,189x = 265,706,300.25
5. Step 5: Solve for x
   x = 265,706,300.25/12,189
6. Step 6: Final answer
   x = 21,798.86