Finding the Third Proportional to 18,513.50 and 40,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,513.50 : 40,103.50 = 40,103.50 : x
2. Step 2: Convert to fraction form
   18,513.50/40,103.50 = 40,103.50/x
3. Step 3: Cross multiply
   18,513.50x = 40,103.50 × 40,103.50
4. Step 4: Simplify right side
   18,513.50x = 1,608,290,712.25
5. Step 5: Solve for x
   x = 1,608,290,712.25/18,513.50
6. Step 6: Final answer
   x = 86,871.24