Finding the Third Proportional to 198,519 and 307,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,519 : 307,630.50 = 307,630.50 : x
2. Step 2: Convert to fraction form
   198,519/307,630.50 = 307,630.50/x
3. Step 3: Cross multiply
   198,519x = 307,630.50 × 307,630.50
4. Step 4: Simplify right side
   198,519x = 94,636,524,530.25
5. Step 5: Solve for x
   x = 94,636,524,530.25/198,519
6. Step 6: Final answer
   x = 476,712.68