Finding the Third Proportional to 188,142.75 and 401,800.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188,142.75 : 401,800.50 = 401,800.50 : x
2. Step 2: Convert to fraction form
   188,142.75/401,800.50 = 401,800.50/x
3. Step 3: Cross multiply
   188,142.75x = 401,800.50 × 401,800.50
4. Step 4: Simplify right side
   188,142.75x = 161,443,641,800.25
5. Step 5: Solve for x
   x = 161,443,641,800.25/188,142.75
6. Step 6: Final answer
   x = 858,091.22