Finding the Third Proportional to 7,155 and 10,717.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155 : 10,717.31 = 10,717.31 : x
2. Step 2: Convert to fraction form
   7,155/10,717.31 = 10,717.31/x
3. Step 3: Cross multiply
   7,155x = 10,717.31 × 10,717.31
4. Step 4: Simplify right side
   7,155x = 114,860,787.22
5. Step 5: Solve for x
   x = 114,860,787.22/7,155
6. Step 6: Final answer
   x = 16,053.22