Finding the Third Proportional to 317,065.50 and 491,508

Step by Step Solution

1. Step 1: Write the proportion equation
   317,065.50 : 491,508 = 491,508 : x
2. Step 2: Convert to fraction form
   317,065.50/491,508 = 491,508/x
3. Step 3: Cross multiply
   317,065.50x = 491,508 × 491,508
4. Step 4: Simplify right side
   317,065.50x = 241,580,114,064
5. Step 5: Solve for x
   x = 241,580,114,064/317,065.50
6. Step 6: Final answer
   x = 761,924.95