Finding the Third Proportional to 86,218.50 and 134,568

Step by Step Solution

1. Step 1: Write the proportion equation
   86,218.50 : 134,568 = 134,568 : x
2. Step 2: Convert to fraction form
   86,218.50/134,568 = 134,568/x
3. Step 3: Cross multiply
   86,218.50x = 134,568 × 134,568
4. Step 4: Simplify right side
   86,218.50x = 18,108,546,624
5. Step 5: Solve for x
   x = 18,108,546,624/86,218.50
6. Step 6: Final answer
   x = 210,030.87