Finding the Third Proportional to 300,581.51 and 449,371.55

Step by Step Solution

1. Step 1: Write the proportion equation
   300,581.51 : 449,371.55 = 449,371.55 : x
2. Step 2: Convert to fraction form
   300,581.51/449,371.55 = 449,371.55/x
3. Step 3: Cross multiply
   300,581.51x = 449,371.55 × 449,371.55
4. Step 4: Simplify right side
   300,581.51x = 201,934,787,140.83
5. Step 5: Solve for x
   x = 201,934,787,140.83/300,581.51
6. Step 6: Final answer
   x = 671,813.74