Finding the Third Proportional to 303,540 and 445,468.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,540 : 445,468.50 = 445,468.50 : x
2. Step 2: Convert to fraction form
   303,540/445,468.50 = 445,468.50/x
3. Step 3: Cross multiply
   303,540x = 445,468.50 × 445,468.50
4. Step 4: Simplify right side
   303,540x = 198,442,184,492.25
5. Step 5: Solve for x
   x = 198,442,184,492.25/303,540
6. Step 6: Final answer
   x = 653,759.59