Finding the Third Proportional to 54,072.56 and 80,660.81

Step by Step Solution

1. Step 1: Write the proportion equation
   54,072.56 : 80,660.81 = 80,660.81 : x
2. Step 2: Convert to fraction form
   54,072.56/80,660.81 = 80,660.81/x
3. Step 3: Cross multiply
   54,072.56x = 80,660.81 × 80,660.81
4. Step 4: Simplify right side
   54,072.56x = 6,506,166,673.16
5. Step 5: Solve for x
   x = 6,506,166,673.16/54,072.56
6. Step 6: Final answer
   x = 120,322.88