Finding the Third Proportional to 8,955 and 12,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,955 : 12,400.50 = 12,400.50 : x
2. Step 2: Convert to fraction form
   8,955/12,400.50 = 12,400.50/x
3. Step 3: Cross multiply
   8,955x = 12,400.50 × 12,400.50
4. Step 4: Simplify right side
   8,955x = 153,772,400.25
5. Step 5: Solve for x
   x = 153,772,400.25/8,955
6. Step 6: Final answer
   x = 17,171.68