Finding the Third Proportional to 343,392.75 and 718,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,392.75 : 718,150.50 = 718,150.50 : x
2. Step 2: Convert to fraction form
   343,392.75/718,150.50 = 718,150.50/x
3. Step 3: Cross multiply
   343,392.75x = 718,150.50 × 718,150.50
4. Step 4: Simplify right side
   343,392.75x = 515,740,140,650.25
5. Step 5: Solve for x
   x = 515,740,140,650.25/343,392.75
6. Step 6: Final answer
   x = 1,501,895.83