Finding the Third Proportional to 199,443 and 299,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,443 : 299,311.50 = 299,311.50 : x
2. Step 2: Convert to fraction form
   199,443/299,311.50 = 299,311.50/x
3. Step 3: Cross multiply
   199,443x = 299,311.50 × 299,311.50
4. Step 4: Simplify right side
   199,443x = 89,587,374,032.25
5. Step 5: Solve for x
   x = 89,587,374,032.25/199,443
6. Step 6: Final answer
   x = 449,187.86