Finding the Third Proportional to 8,778.38 and 13,683.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,778.38 : 13,683.94 = 13,683.94 : x
2. Step 2: Convert to fraction form
   8,778.38/13,683.94 = 13,683.94/x
3. Step 3: Cross multiply
   8,778.38x = 13,683.94 × 13,683.94
4. Step 4: Simplify right side
   8,778.38x = 187,250,145.50
5. Step 5: Solve for x
   x = 187,250,145.50/8,778.38
6. Step 6: Final answer
   x = 21,330.84