Finding the Third Proportional to 9,558 and 13,351.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,558 : 13,351.50 = 13,351.50 : x
2. Step 2: Convert to fraction form
   9,558/13,351.50 = 13,351.50/x
3. Step 3: Cross multiply
   9,558x = 13,351.50 × 13,351.50
4. Step 4: Simplify right side
   9,558x = 178,262,552.25
5. Step 5: Solve for x
   x = 178,262,552.25/9,558
6. Step 6: Final answer
   x = 18,650.61