Finding the Third Proportional to 198,088 and 298,078

Step by Step Solution

1. Step 1: Write the proportion equation
   198,088 : 298,078 = 298,078 : x
2. Step 2: Convert to fraction form
   198,088/298,078 = 298,078/x
3. Step 3: Cross multiply
   198,088x = 298,078 × 298,078
4. Step 4: Simplify right side
   198,088x = 88,850,494,084
5. Step 5: Solve for x
   x = 88,850,494,084/198,088
6. Step 6: Final answer
   x = 448,540.52