Finding the Third Proportional to 86,899 and 131,270

Step by Step Solution

1. Step 1: Write the proportion equation
   86,899 : 131,270 = 131,270 : x
2. Step 2: Convert to fraction form
   86,899/131,270 = 131,270/x
3. Step 3: Cross multiply
   86,899x = 131,270 × 131,270
4. Step 4: Simplify right side
   86,899x = 17,231,812,900
5. Step 5: Solve for x
   x = 17,231,812,900/86,899
6. Step 6: Final answer
   x = 198,297.02