Finding the Third Proportional to 18,398 and 40,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,398 : 40,017.50 = 40,017.50 : x
2. Step 2: Convert to fraction form
   18,398/40,017.50 = 40,017.50/x
3. Step 3: Cross multiply
   18,398x = 40,017.50 × 40,017.50
4. Step 4: Simplify right side
   18,398x = 1,601,400,306.25
5. Step 5: Solve for x
   x = 1,601,400,306.25/18,398
6. Step 6: Final answer
   x = 87,042.09