Finding the Third Proportional to 260,074.69 and 408,083.34

Step by Step Solution

1. Step 1: Write the proportion equation
   260,074.69 : 408,083.34 = 408,083.34 : x
2. Step 2: Convert to fraction form
   260,074.69/408,083.34 = 408,083.34/x
3. Step 3: Cross multiply
   260,074.69x = 408,083.34 × 408,083.34
4. Step 4: Simplify right side
   260,074.69x = 166,532,015,446.18
5. Step 5: Solve for x
   x = 166,532,015,446.18/260,074.69
6. Step 6: Final answer
   x = 640,323.81