Finding the Third Proportional to 188,851.50 and 405,771

Step by Step Solution

1. Step 1: Write the proportion equation
   188,851.50 : 405,771 = 405,771 : x
2. Step 2: Convert to fraction form
   188,851.50/405,771 = 405,771/x
3. Step 3: Cross multiply
   188,851.50x = 405,771 × 405,771
4. Step 4: Simplify right side
   188,851.50x = 164,650,104,441
5. Step 5: Solve for x
   x = 164,650,104,441/188,851.50
6. Step 6: Final answer
   x = 871,849.60