Finding the Third Proportional to 7,940.25 and 18,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,940.25 : 18,688.50 = 18,688.50 : x
2. Step 2: Convert to fraction form
   7,940.25/18,688.50 = 18,688.50/x
3. Step 3: Cross multiply
   7,940.25x = 18,688.50 × 18,688.50
4. Step 4: Simplify right side
   7,940.25x = 349,260,032.25
5. Step 5: Solve for x
   x = 349,260,032.25/7,940.25
6. Step 6: Final answer
   x = 43,986.02