Finding the Third Proportional to 7,172.50 and 10,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,172.50 : 10,755.50 = 10,755.50 : x
2. Step 2: Convert to fraction form
   7,172.50/10,755.50 = 10,755.50/x
3. Step 3: Cross multiply
   7,172.50x = 10,755.50 × 10,755.50
4. Step 4: Simplify right side
   7,172.50x = 115,680,780.25
5. Step 5: Solve for x
   x = 115,680,780.25/7,172.50
6. Step 6: Final answer
   x = 16,128.38