Finding the Third Proportional to 20,778.50 and 45,451.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,778.50 : 45,451.75 = 45,451.75 : x
2. Step 2: Convert to fraction form
   20,778.50/45,451.75 = 45,451.75/x
3. Step 3: Cross multiply
   20,778.50x = 45,451.75 × 45,451.75
4. Step 4: Simplify right side
   20,778.50x = 2,065,861,578.06
5. Step 5: Solve for x
   x = 2,065,861,578.06/20,778.50
6. Step 6: Final answer
   x = 99,423.04