Finding the Third Proportional to 86,827.78 and 131,166

Step by Step Solution

1. Step 1: Write the proportion equation
   86,827.78 : 131,166 = 131,166 : x
2. Step 2: Convert to fraction form
   86,827.78/131,166 = 131,166/x
3. Step 3: Cross multiply
   86,827.78x = 131,166 × 131,166
4. Step 4: Simplify right side
   86,827.78x = 17,204,519,556
5. Step 5: Solve for x
   x = 17,204,519,556/86,827.78
6. Step 6: Final answer
   x = 198,145.33