Finding the Third Proportional to 79,978 and 133,284

Step by Step Solution

1. Step 1: Write the proportion equation
   79,978 : 133,284 = 133,284 : x
2. Step 2: Convert to fraction form
   79,978/133,284 = 133,284/x
3. Step 3: Cross multiply
   79,978x = 133,284 × 133,284
4. Step 4: Simplify right side
   79,978x = 17,764,624,656
5. Step 5: Solve for x
   x = 17,764,624,656/79,978
6. Step 6: Final answer
   x = 222,118.89