Finding the Third Proportional to 5,778.75 and 10,817.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,778.75 : 10,817.25 = 10,817.25 : x
2. Step 2: Convert to fraction form
   5,778.75/10,817.25 = 10,817.25/x
3. Step 3: Cross multiply
   5,778.75x = 10,817.25 × 10,817.25
4. Step 4: Simplify right side
   5,778.75x = 117,012,897.56
5. Step 5: Solve for x
   x = 117,012,897.56/5,778.75
6. Step 6: Final answer
   x = 20,248.83