Finding the Third Proportional to 57,359.81 and 80,631.28

Step by Step Solution

1. Step 1: Write the proportion equation
   57,359.81 : 80,631.28 = 80,631.28 : x
2. Step 2: Convert to fraction form
   57,359.81/80,631.28 = 80,631.28/x
3. Step 3: Cross multiply
   57,359.81x = 80,631.28 × 80,631.28
4. Step 4: Simplify right side
   57,359.81x = 6,501,403,516.02
5. Step 5: Solve for x
   x = 6,501,403,516.02/57,359.81
6. Step 6: Final answer
   x = 113,344.23