Finding the Third Proportional to 311,983.50 and 446,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,983.50 : 446,152.50 = 446,152.50 : x
2. Step 2: Convert to fraction form
   311,983.50/446,152.50 = 446,152.50/x
3. Step 3: Cross multiply
   311,983.50x = 446,152.50 × 446,152.50
4. Step 4: Simplify right side
   311,983.50x = 199,052,053,256.25
5. Step 5: Solve for x
   x = 199,052,053,256.25/311,983.50
6. Step 6: Final answer
   x = 638,021.09