Finding the Third Proportional to 188,859.94 and 405,673.31

Step by Step Solution

1. Step 1: Write the proportion equation
   188,859.94 : 405,673.31 = 405,673.31 : x
2. Step 2: Convert to fraction form
   188,859.94/405,673.31 = 405,673.31/x
3. Step 3: Cross multiply
   188,859.94x = 405,673.31 × 405,673.31
4. Step 4: Simplify right side
   188,859.94x = 164,570,836,474.72
5. Step 5: Solve for x
   x = 164,570,836,474.72/188,859.94
6. Step 6: Final answer
   x = 871,390.93