Finding the Third Proportional to 63,729 and 140,040

Step by Step Solution

1. Step 1: Write the proportion equation
   63,729 : 140,040 = 140,040 : x
2. Step 2: Convert to fraction form
   63,729/140,040 = 140,040/x
3. Step 3: Cross multiply
   63,729x = 140,040 × 140,040
4. Step 4: Simplify right side
   63,729x = 19,611,201,600
5. Step 5: Solve for x
   x = 19,611,201,600/63,729
6. Step 6: Final answer
   x = 307,728.06