Finding the Third Proportional to 67,456.13 and 140,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,456.13 : 140,440.50 = 140,440.50 : x
2. Step 2: Convert to fraction form
   67,456.13/140,440.50 = 140,440.50/x
3. Step 3: Cross multiply
   67,456.13x = 140,440.50 × 140,440.50
4. Step 4: Simplify right side
   67,456.13x = 19,723,534,040.25
5. Step 5: Solve for x
   x = 19,723,534,040.25/67,456.13
6. Step 6: Final answer
   x = 292,390.56