Finding the Third Proportional to 8,235.50 and 18,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,235.50 : 18,111.50 = 18,111.50 : x
2. Step 2: Convert to fraction form
   8,235.50/18,111.50 = 18,111.50/x
3. Step 3: Cross multiply
   8,235.50x = 18,111.50 × 18,111.50
4. Step 4: Simplify right side
   8,235.50x = 328,026,432.25
5. Step 5: Solve for x
   x = 328,026,432.25/8,235.50
6. Step 6: Final answer
   x = 39,830.79