Finding the Third Proportional to 317,593 and 681,234.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,593 : 681,234.50 = 681,234.50 : x
2. Step 2: Convert to fraction form
   317,593/681,234.50 = 681,234.50/x
3. Step 3: Cross multiply
   317,593x = 681,234.50 × 681,234.50
4. Step 4: Simplify right side
   317,593x = 464,080,443,990.25
5. Step 5: Solve for x
   x = 464,080,443,990.25/317,593
6. Step 6: Final answer
   x = 1,461,242.67