Finding the Third Proportional to 20,778 and 29,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,778 : 29,155.50 = 29,155.50 : x
2. Step 2: Convert to fraction form
   20,778/29,155.50 = 29,155.50/x
3. Step 3: Cross multiply
   20,778x = 29,155.50 × 29,155.50
4. Step 4: Simplify right side
   20,778x = 850,043,180.25
5. Step 5: Solve for x
   x = 850,043,180.25/20,778
6. Step 6: Final answer
   x = 40,910.73