Finding the Third Proportional to 18,662.25 and 28,289.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,662.25 : 28,289.50 = 28,289.50 : x
2. Step 2: Convert to fraction form
   18,662.25/28,289.50 = 28,289.50/x
3. Step 3: Cross multiply
   18,662.25x = 28,289.50 × 28,289.50
4. Step 4: Simplify right side
   18,662.25x = 800,295,810.25
5. Step 5: Solve for x
   x = 800,295,810.25/18,662.25
6. Step 6: Final answer
   x = 42,883.14