Finding the Third Proportional to 18,317.25 and 40,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,317.25 : 40,144.50 = 40,144.50 : x
2. Step 2: Convert to fraction form
   18,317.25/40,144.50 = 40,144.50/x
3. Step 3: Cross multiply
   18,317.25x = 40,144.50 × 40,144.50
4. Step 4: Simplify right side
   18,317.25x = 1,611,580,880.25
5. Step 5: Solve for x
   x = 1,611,580,880.25/18,317.25
6. Step 6: Final answer
   x = 87,981.60