Finding the Third Proportional to 20,778.75 and 45,709.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,778.75 : 45,709.88 = 45,709.88 : x
2. Step 2: Convert to fraction form
   20,778.75/45,709.88 = 45,709.88/x
3. Step 3: Cross multiply
   20,778.75x = 45,709.88 × 45,709.88
4. Step 4: Simplify right side
   20,778.75x = 2,089,392,672.52
5. Step 5: Solve for x
   x = 2,089,392,672.52/20,778.75
6. Step 6: Final answer
   x = 100,554.30