Finding the Third Proportional to 8,670.50 and 13,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,670.50 : 13,451.50 = 13,451.50 : x
2. Step 2: Convert to fraction form
   8,670.50/13,451.50 = 13,451.50/x
3. Step 3: Cross multiply
   8,670.50x = 13,451.50 × 13,451.50
4. Step 4: Simplify right side
   8,670.50x = 180,942,852.25
5. Step 5: Solve for x
   x = 180,942,852.25/8,670.50
6. Step 6: Final answer
   x = 20,868.79