Finding the Third Proportional to 138,931.50 and 303,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,931.50 : 303,550.50 = 303,550.50 : x
2. Step 2: Convert to fraction form
   138,931.50/303,550.50 = 303,550.50/x
3. Step 3: Cross multiply
   138,931.50x = 303,550.50 × 303,550.50
4. Step 4: Simplify right side
   138,931.50x = 92,142,906,050.25
5. Step 5: Solve for x
   x = 92,142,906,050.25/138,931.50
6. Step 6: Final answer
   x = 663,225.45