Finding the Third Proportional to 68,890.50 and 73,401.19

Step by Step Solution

1. Step 1: Write the proportion equation
   68,890.50 : 73,401.19 = 73,401.19 : x
2. Step 2: Convert to fraction form
   68,890.50/73,401.19 = 73,401.19/x
3. Step 3: Cross multiply
   68,890.50x = 73,401.19 × 73,401.19
4. Step 4: Simplify right side
   68,890.50x = 5,387,734,326.41
5. Step 5: Solve for x
   x = 5,387,734,326.41/68,890.50
6. Step 6: Final answer
   x = 78,207.22