Finding the Third Proportional to 321,371.50 and 613,583

Step by Step Solution

1. Step 1: Write the proportion equation
   321,371.50 : 613,583 = 613,583 : x
2. Step 2: Convert to fraction form
   321,371.50/613,583 = 613,583/x
3. Step 3: Cross multiply
   321,371.50x = 613,583 × 613,583
4. Step 4: Simplify right side
   321,371.50x = 376,484,097,889
5. Step 5: Solve for x
   x = 376,484,097,889/321,371.50
6. Step 6: Final answer
   x = 1,171,491.86