Finding the Third Proportional to 10.50 and 20.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10.50 : 20.34 = 20.34 : x
2. Step 2: Convert to fraction form
   10.50/20.34 = 20.34/x
3. Step 3: Cross multiply
   10.50x = 20.34 × 20.34
4. Step 4: Simplify right side
   10.50x = 413.87
5. Step 5: Solve for x
   x = 413.87/10.50
6. Step 6: Final answer
   x = 39.42