Finding the Third Proportional to 33,430 and 67,406

Step by Step Solution

1. Step 1: Write the proportion equation
   33,430 : 67,406 = 67,406 : x
2. Step 2: Convert to fraction form
   33,430/67,406 = 67,406/x
3. Step 3: Cross multiply
   33,430x = 67,406 × 67,406
4. Step 4: Simplify right side
   33,430x = 4,543,568,836
5. Step 5: Solve for x
   x = 4,543,568,836/33,430
6. Step 6: Final answer
   x = 135,912.92