Finding the Third Proportional to 67,489.50 and 99,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,489.50 : 99,040.50 = 99,040.50 : x
2. Step 2: Convert to fraction form
   67,489.50/99,040.50 = 99,040.50/x
3. Step 3: Cross multiply
   67,489.50x = 99,040.50 × 99,040.50
4. Step 4: Simplify right side
   67,489.50x = 9,809,020,640.25
5. Step 5: Solve for x
   x = 9,809,020,640.25/67,489.50
6. Step 6: Final answer
   x = 145,341.43