Finding the Third Proportional to 67,891 and 137,602

Step by Step Solution

1. Step 1: Write the proportion equation
   67,891 : 137,602 = 137,602 : x
2. Step 2: Convert to fraction form
   67,891/137,602 = 137,602/x
3. Step 3: Cross multiply
   67,891x = 137,602 × 137,602
4. Step 4: Simplify right side
   67,891x = 18,934,310,404
5. Step 5: Solve for x
   x = 18,934,310,404/67,891
6. Step 6: Final answer
   x = 278,892.79