Finding the Third Proportional to 63,942 and 140,574

Step by Step Solution

1. Step 1: Write the proportion equation
   63,942 : 140,574 = 140,574 : x
2. Step 2: Convert to fraction form
   63,942/140,574 = 140,574/x
3. Step 3: Cross multiply
   63,942x = 140,574 × 140,574
4. Step 4: Simplify right side
   63,942x = 19,761,049,476
5. Step 5: Solve for x
   x = 19,761,049,476/63,942
6. Step 6: Final answer
   x = 309,046.47