Finding the Third Proportional to 383,949 and 603,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   383,949 : 603,139.50 = 603,139.50 : x
2. Step 2: Convert to fraction form
   383,949/603,139.50 = 603,139.50/x
3. Step 3: Cross multiply
   383,949x = 603,139.50 × 603,139.50
4. Step 4: Simplify right side
   383,949x = 363,777,256,460.25
5. Step 5: Solve for x
   x = 363,777,256,460.25/383,949
6. Step 6: Final answer
   x = 947,462.44