Finding the Third Proportional to 186,311.25 and 404,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,311.25 : 404,131.50 = 404,131.50 : x
2. Step 2: Convert to fraction form
   186,311.25/404,131.50 = 404,131.50/x
3. Step 3: Cross multiply
   186,311.25x = 404,131.50 × 404,131.50
4. Step 4: Simplify right side
   186,311.25x = 163,322,269,292.25
5. Step 5: Solve for x
   x = 163,322,269,292.25/186,311.25
6. Step 6: Final answer
   x = 876,609.81