Finding the Third Proportional to 199,612.50 and 298,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,612.50 : 298,630.50 = 298,630.50 : x
2. Step 2: Convert to fraction form
   199,612.50/298,630.50 = 298,630.50/x
3. Step 3: Cross multiply
   199,612.50x = 298,630.50 × 298,630.50
4. Step 4: Simplify right side
   199,612.50x = 89,180,175,530.25
5. Step 5: Solve for x
   x = 89,180,175,530.25/199,612.50
6. Step 6: Final answer
   x = 446,766.49