Finding the Third Proportional to 317,870 and 480,044.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,870 : 480,044.50 = 480,044.50 : x
2. Step 2: Convert to fraction form
   317,870/480,044.50 = 480,044.50/x
3. Step 3: Cross multiply
   317,870x = 480,044.50 × 480,044.50
4. Step 4: Simplify right side
   317,870x = 230,442,721,980.25
5. Step 5: Solve for x
   x = 230,442,721,980.25/317,870
6. Step 6: Final answer
   x = 724,959.01