Finding the Third Proportional to 63,778 and 140,131

Step by Step Solution

1. Step 1: Write the proportion equation
   63,778 : 140,131 = 140,131 : x
2. Step 2: Convert to fraction form
   63,778/140,131 = 140,131/x
3. Step 3: Cross multiply
   63,778x = 140,131 × 140,131
4. Step 4: Simplify right side
   63,778x = 19,636,697,161
5. Step 5: Solve for x
   x = 19,636,697,161/63,778
6. Step 6: Final answer
   x = 307,891.39