Finding the Third Proportional to 344,217.50 and 745,621

Step by Step Solution

1. Step 1: Write the proportion equation
   344,217.50 : 745,621 = 745,621 : x
2. Step 2: Convert to fraction form
   344,217.50/745,621 = 745,621/x
3. Step 3: Cross multiply
   344,217.50x = 745,621 × 745,621
4. Step 4: Simplify right side
   344,217.50x = 555,950,675,641
5. Step 5: Solve for x
   x = 555,950,675,641/344,217.50
6. Step 6: Final answer
   x = 1,615,114.50