Finding the Third Proportional to 311,955 and 682,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,955 : 682,081.50 = 682,081.50 : x
2. Step 2: Convert to fraction form
   311,955/682,081.50 = 682,081.50/x
3. Step 3: Cross multiply
   311,955x = 682,081.50 × 682,081.50
4. Step 4: Simplify right side
   311,955x = 465,235,172,642.25
5. Step 5: Solve for x
   x = 465,235,172,642.25/311,955
6. Step 6: Final answer
   x = 1,491,353.47