Finding the Third Proportional to 67,447.69 and 73,644.19

Step by Step Solution

1. Step 1: Write the proportion equation
   67,447.69 : 73,644.19 = 73,644.19 : x
2. Step 2: Convert to fraction form
   67,447.69/73,644.19 = 73,644.19/x
3. Step 3: Cross multiply
   67,447.69x = 73,644.19 × 73,644.19
4. Step 4: Simplify right side
   67,447.69x = 5,423,466,352.54
5. Step 5: Solve for x
   x = 5,423,466,352.54/67,447.69
6. Step 6: Final answer
   x = 80,409.97