Finding the Third Proportional to 198,078 and 297,144

Step by Step Solution

1. Step 1: Write the proportion equation
   198,078 : 297,144 = 297,144 : x
2. Step 2: Convert to fraction form
   198,078/297,144 = 297,144/x
3. Step 3: Cross multiply
   198,078x = 297,144 × 297,144
4. Step 4: Simplify right side
   198,078x = 88,294,556,736
5. Step 5: Solve for x
   x = 88,294,556,736/198,078
6. Step 6: Final answer
   x = 445,756.50