Finding the Third Proportional to 10,503.50 and 20,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,503.50 : 20,219.50 = 20,219.50 : x
2. Step 2: Convert to fraction form
   10,503.50/20,219.50 = 20,219.50/x
3. Step 3: Cross multiply
   10,503.50x = 20,219.50 × 20,219.50
4. Step 4: Simplify right side
   10,503.50x = 408,828,180.25
5. Step 5: Solve for x
   x = 408,828,180.25/10,503.50
6. Step 6: Final answer
   x = 38,923.04