Finding the Third Proportional to 67,404 and 89,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,404 : 89,440.50 = 89,440.50 : x
2. Step 2: Convert to fraction form
   67,404/89,440.50 = 89,440.50/x
3. Step 3: Cross multiply
   67,404x = 89,440.50 × 89,440.50
4. Step 4: Simplify right side
   67,404x = 7,999,603,040.25
5. Step 5: Solve for x
   x = 7,999,603,040.25/67,404
6. Step 6: Final answer
   x = 118,681.43