Finding the Third Proportional to 64,671.50 and 140,734

Step by Step Solution

1. Step 1: Write the proportion equation
   64,671.50 : 140,734 = 140,734 : x
2. Step 2: Convert to fraction form
   64,671.50/140,734 = 140,734/x
3. Step 3: Cross multiply
   64,671.50x = 140,734 × 140,734
4. Step 4: Simplify right side
   64,671.50x = 19,806,058,756
5. Step 5: Solve for x
   x = 19,806,058,756/64,671.50
6. Step 6: Final answer
   x = 306,256.37