Finding the Third Proportional to 67,426 and 136,766

Step by Step Solution

1. Step 1: Write the proportion equation
   67,426 : 136,766 = 136,766 : x
2. Step 2: Convert to fraction form
   67,426/136,766 = 136,766/x
3. Step 3: Cross multiply
   67,426x = 136,766 × 136,766
4. Step 4: Simplify right side
   67,426x = 18,704,938,756
5. Step 5: Solve for x
   x = 18,704,938,756/67,426
6. Step 6: Final answer
   x = 277,414.33