Finding the Third Proportional to 67,240 and 146,310

Step by Step Solution

1. Step 1: Write the proportion equation
   67,240 : 146,310 = 146,310 : x
2. Step 2: Convert to fraction form
   67,240/146,310 = 146,310/x
3. Step 3: Cross multiply
   67,240x = 146,310 × 146,310
4. Step 4: Simplify right side
   67,240x = 21,406,616,100
5. Step 5: Solve for x
   x = 21,406,616,100/67,240
6. Step 6: Final answer
   x = 318,361.33