Finding the Third Proportional to 404,690.50 and 874,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,690.50 : 874,221.50 = 874,221.50 : x
2. Step 2: Convert to fraction form
   404,690.50/874,221.50 = 874,221.50/x
3. Step 3: Cross multiply
   404,690.50x = 874,221.50 × 874,221.50
4. Step 4: Simplify right side
   404,690.50x = 764,263,231,062.25
5. Step 5: Solve for x
   x = 764,263,231,062.25/404,690.50
6. Step 6: Final answer
   x = 1,888,512.90