Finding the Third Proportional to 139,363 and 210,350.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,363 : 210,350.50 = 210,350.50 : x
2. Step 2: Convert to fraction form
   139,363/210,350.50 = 210,350.50/x
3. Step 3: Cross multiply
   139,363x = 210,350.50 × 210,350.50
4. Step 4: Simplify right side
   139,363x = 44,247,332,850.25
5. Step 5: Solve for x
   x = 44,247,332,850.25/139,363
6. Step 6: Final answer
   x = 317,496.99