Finding the Third Proportional to 8,100 and 12,508.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100 : 12,508.50 = 12,508.50 : x
2. Step 2: Convert to fraction form
   8,100/12,508.50 = 12,508.50/x
3. Step 3: Cross multiply
   8,100x = 12,508.50 × 12,508.50
4. Step 4: Simplify right side
   8,100x = 156,462,572.25
5. Step 5: Solve for x
   x = 156,462,572.25/8,100
6. Step 6: Final answer
   x = 19,316.37