Finding the Third Proportional to 8,222.63 and 12,755.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,222.63 : 12,755.25 = 12,755.25 : x
2. Step 2: Convert to fraction form
   8,222.63/12,755.25 = 12,755.25/x
3. Step 3: Cross multiply
   8,222.63x = 12,755.25 × 12,755.25
4. Step 4: Simplify right side
   8,222.63x = 162,696,402.56
5. Step 5: Solve for x
   x = 162,696,402.56/8,222.63
6. Step 6: Final answer
   x = 19,786.43