Finding the Third Proportional to 42,558 and 67,357

Step by Step Solution

1. Step 1: Write the proportion equation
   42,558 : 67,357 = 67,357 : x
2. Step 2: Convert to fraction form
   42,558/67,357 = 67,357/x
3. Step 3: Cross multiply
   42,558x = 67,357 × 67,357
4. Step 4: Simplify right side
   42,558x = 4,536,965,449
5. Step 5: Solve for x
   x = 4,536,965,449/42,558
6. Step 6: Final answer
   x = 106,606.64