Finding the Third Proportional to 68,080.50 and 73,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,080.50 : 73,669.50 = 73,669.50 : x
2. Step 2: Convert to fraction form
   68,080.50/73,669.50 = 73,669.50/x
3. Step 3: Cross multiply
   68,080.50x = 73,669.50 × 73,669.50
4. Step 4: Simplify right side
   68,080.50x = 5,427,195,230.25
5. Step 5: Solve for x
   x = 5,427,195,230.25/68,080.50
6. Step 6: Final answer
   x = 79,717.32