Finding the Third Proportional to 67,771.50 and 90,568.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,771.50 : 90,568.50 = 90,568.50 : x
2. Step 2: Convert to fraction form
   67,771.50/90,568.50 = 90,568.50/x
3. Step 3: Cross multiply
   67,771.50x = 90,568.50 × 90,568.50
4. Step 4: Simplify right side
   67,771.50x = 8,202,653,192.25
5. Step 5: Solve for x
   x = 8,202,653,192.25/67,771.50
6. Step 6: Final answer
   x = 121,033.96