Finding the Third Proportional to 81,486 and 108,162

Step by Step Solution

1. Step 1: Write the proportion equation
   81,486 : 108,162 = 108,162 : x
2. Step 2: Convert to fraction form
   81,486/108,162 = 108,162/x
3. Step 3: Cross multiply
   81,486x = 108,162 × 108,162
4. Step 4: Simplify right side
   81,486x = 11,699,018,244
5. Step 5: Solve for x
   x = 11,699,018,244/81,486
6. Step 6: Final answer
   x = 143,570.90