Finding the Third Proportional to 86,796.50 and 135,270

Step by Step Solution

1. Step 1: Write the proportion equation
   86,796.50 : 135,270 = 135,270 : x
2. Step 2: Convert to fraction form
   86,796.50/135,270 = 135,270/x
3. Step 3: Cross multiply
   86,796.50x = 135,270 × 135,270
4. Step 4: Simplify right side
   86,796.50x = 18,297,972,900
5. Step 5: Solve for x
   x = 18,297,972,900/86,796.50
6. Step 6: Final answer
   x = 210,814.64