Finding the Third Proportional to 8,869 and 13,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,869 : 13,789.50 = 13,789.50 : x
2. Step 2: Convert to fraction form
   8,869/13,789.50 = 13,789.50/x
3. Step 3: Cross multiply
   8,869x = 13,789.50 × 13,789.50
4. Step 4: Simplify right side
   8,869x = 190,150,310.25
5. Step 5: Solve for x
   x = 190,150,310.25/8,869
6. Step 6: Final answer
   x = 21,439.88