Finding the Third Proportional to 18,111.75 and 40,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,111.75 : 40,111.50 = 40,111.50 : x
2. Step 2: Convert to fraction form
   18,111.75/40,111.50 = 40,111.50/x
3. Step 3: Cross multiply
   18,111.75x = 40,111.50 × 40,111.50
4. Step 4: Simplify right side
   18,111.75x = 1,608,932,432.25
5. Step 5: Solve for x
   x = 1,608,932,432.25/18,111.75
6. Step 6: Final answer
   x = 88,833.63