Finding the Third Proportional to 57,986.96 and 89,786.36

Step by Step Solution

1. Step 1: Write the proportion equation
   57,986.96 : 89,786.36 = 89,786.36 : x
2. Step 2: Convert to fraction form
   57,986.96/89,786.36 = 89,786.36/x
3. Step 3: Cross multiply
   57,986.96x = 89,786.36 × 89,786.36
4. Step 4: Simplify right side
   57,986.96x = 8,061,589,628.36
5. Step 5: Solve for x
   x = 8,061,589,628.36/57,986.96
6. Step 6: Final answer
   x = 139,024.17