Finding the Third Proportional to 86,579.75 and 132,990

Step by Step Solution

1. Step 1: Write the proportion equation
   86,579.75 : 132,990 = 132,990 : x
2. Step 2: Convert to fraction form
   86,579.75/132,990 = 132,990/x
3. Step 3: Cross multiply
   86,579.75x = 132,990 × 132,990
4. Step 4: Simplify right side
   86,579.75x = 17,686,340,100
5. Step 5: Solve for x
   x = 17,686,340,100/86,579.75
6. Step 6: Final answer
   x = 204,278.02