Finding the Third Proportional to 57,879.56 and 86,956.03

Step by Step Solution

1. Step 1: Write the proportion equation
   57,879.56 : 86,956.03 = 86,956.03 : x
2. Step 2: Convert to fraction form
   57,879.56/86,956.03 = 86,956.03/x
3. Step 3: Cross multiply
   57,879.56x = 86,956.03 × 86,956.03
4. Step 4: Simplify right side
   57,879.56x = 7,561,351,370.75
5. Step 5: Solve for x
   x = 7,561,351,370.75/57,879.56
6. Step 6: Final answer
   x = 130,639.40