Finding the Third Proportional to 198,405.75 and 298,061.25

Step by Step Solution

1. Step 1: Write the proportion equation
   198,405.75 : 298,061.25 = 298,061.25 : x
2. Step 2: Convert to fraction form
   198,405.75/298,061.25 = 298,061.25/x
3. Step 3: Cross multiply
   198,405.75x = 298,061.25 × 298,061.25
4. Step 4: Simplify right side
   198,405.75x = 88,840,508,751.56
5. Step 5: Solve for x
   x = 88,840,508,751.56/198,405.75
6. Step 6: Final answer
   x = 447,771.85