Finding the Third Proportional to 11,929.50 and 18,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,929.50 : 18,949.50 = 18,949.50 : x
2. Step 2: Convert to fraction form
   11,929.50/18,949.50 = 18,949.50/x
3. Step 3: Cross multiply
   11,929.50x = 18,949.50 × 18,949.50
4. Step 4: Simplify right side
   11,929.50x = 359,083,550.25
5. Step 5: Solve for x
   x = 359,083,550.25/11,929.50
6. Step 6: Final answer
   x = 30,100.47