Finding the Third Proportional to 317,110.50 and 491,112

Step by Step Solution

1. Step 1: Write the proportion equation
   317,110.50 : 491,112 = 491,112 : x
2. Step 2: Convert to fraction form
   317,110.50/491,112 = 491,112/x
3. Step 3: Cross multiply
   317,110.50x = 491,112 × 491,112
4. Step 4: Simplify right side
   317,110.50x = 241,190,996,544
5. Step 5: Solve for x
   x = 241,190,996,544/317,110.50
6. Step 6: Final answer
   x = 760,589.75