Finding the Third Proportional to 10,413 and 13,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,413 : 13,189.50 = 13,189.50 : x
2. Step 2: Convert to fraction form
   10,413/13,189.50 = 13,189.50/x
3. Step 3: Cross multiply
   10,413x = 13,189.50 × 13,189.50
4. Step 4: Simplify right side
   10,413x = 173,962,910.25
5. Step 5: Solve for x
   x = 173,962,910.25/10,413
6. Step 6: Final answer
   x = 16,706.32