Finding the Third Proportional to 155,966 and 223,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,966 : 223,039.50 = 223,039.50 : x
2. Step 2: Convert to fraction form
   155,966/223,039.50 = 223,039.50/x
3. Step 3: Cross multiply
   155,966x = 223,039.50 × 223,039.50
4. Step 4: Simplify right side
   155,966x = 49,746,618,560.25
5. Step 5: Solve for x
   x = 49,746,618,560.25/155,966
6. Step 6: Final answer
   x = 318,958.10