Finding the Third Proportional to 311,173.50 and 633,771

Step by Step Solution

1. Step 1: Write the proportion equation
   311,173.50 : 633,771 = 633,771 : x
2. Step 2: Convert to fraction form
   311,173.50/633,771 = 633,771/x
3. Step 3: Cross multiply
   311,173.50x = 633,771 × 633,771
4. Step 4: Simplify right side
   311,173.50x = 401,665,680,441
5. Step 5: Solve for x
   x = 401,665,680,441/311,173.50
6. Step 6: Final answer
   x = 1,290,809.41