Finding the Third Proportional to 200,426.06 and 417,436.31

Step by Step Solution

1. Step 1: Write the proportion equation
   200,426.06 : 417,436.31 = 417,436.31 : x
2. Step 2: Convert to fraction form
   200,426.06/417,436.31 = 417,436.31/x
3. Step 3: Cross multiply
   200,426.06x = 417,436.31 × 417,436.31
4. Step 4: Simplify right side
   200,426.06x = 174,253,074,993.60
5. Step 5: Solve for x
   x = 174,253,074,993.60/200,426.06
6. Step 6: Final answer
   x = 869,413.25