Finding the Third Proportional to 6,123 and 13,215

Step by Step Solution

1. Step 1: Write the proportion equation
   6,123 : 13,215 = 13,215 : x
2. Step 2: Convert to fraction form
   6,123/13,215 = 13,215/x
3. Step 3: Cross multiply
   6,123x = 13,215 × 13,215
4. Step 4: Simplify right side
   6,123x = 174,636,225
5. Step 5: Solve for x
   x = 174,636,225/6,123
6. Step 6: Final answer
   x = 28,521.35