Finding the Third Proportional to 198,885 and 301,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,885 : 301,216.50 = 301,216.50 : x
2. Step 2: Convert to fraction form
   198,885/301,216.50 = 301,216.50/x
3. Step 3: Cross multiply
   198,885x = 301,216.50 × 301,216.50
4. Step 4: Simplify right side
   198,885x = 90,731,379,872.25
5. Step 5: Solve for x
   x = 90,731,379,872.25/198,885
6. Step 6: Final answer
   x = 456,200.22