Finding the Third Proportional to 67,392 and 142,056

Step by Step Solution

1. Step 1: Write the proportion equation
   67,392 : 142,056 = 142,056 : x
2. Step 2: Convert to fraction form
   67,392/142,056 = 142,056/x
3. Step 3: Cross multiply
   67,392x = 142,056 × 142,056
4. Step 4: Simplify right side
   67,392x = 20,179,907,136
5. Step 5: Solve for x
   x = 20,179,907,136/67,392
6. Step 6: Final answer
   x = 299,440.69