Finding the Third Proportional to 67,340 and 141,640

Step by Step Solution

1. Step 1: Write the proportion equation
   67,340 : 141,640 = 141,640 : x
2. Step 2: Convert to fraction form
   67,340/141,640 = 141,640/x
3. Step 3: Cross multiply
   67,340x = 141,640 × 141,640
4. Step 4: Simplify right side
   67,340x = 20,061,889,600
5. Step 5: Solve for x
   x = 20,061,889,600/67,340
6. Step 6: Final answer
   x = 297,919.36