Finding the Third Proportional to 113,158.50 and 122,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,158.50 : 122,716.50 = 122,716.50 : x
2. Step 2: Convert to fraction form
   113,158.50/122,716.50 = 122,716.50/x
3. Step 3: Cross multiply
   113,158.50x = 122,716.50 × 122,716.50
4. Step 4: Simplify right side
   113,158.50x = 15,059,339,372.25
5. Step 5: Solve for x
   x = 15,059,339,372.25/113,158.50
6. Step 6: Final answer
   x = 133,081.82