Finding the Third Proportional to 71,155 and 111,617

Step by Step Solution

1. Step 1: Write the proportion equation
   71,155 : 111,617 = 111,617 : x
2. Step 2: Convert to fraction form
   71,155/111,617 = 111,617/x
3. Step 3: Cross multiply
   71,155x = 111,617 × 111,617
4. Step 4: Simplify right side
   71,155x = 12,458,354,689
5. Step 5: Solve for x
   x = 12,458,354,689/71,155
6. Step 6: Final answer
   x = 175,087.55