Finding the Third Proportional to 404,688 and 874,215.75

Step by Step Solution

1. Step 1: Write the proportion equation
   404,688 : 874,215.75 = 874,215.75 : x
2. Step 2: Convert to fraction form
   404,688/874,215.75 = 874,215.75/x
3. Step 3: Cross multiply
   404,688x = 874,215.75 × 874,215.75
4. Step 4: Simplify right side
   404,688x = 764,253,177,548.06
5. Step 5: Solve for x
   x = 764,253,177,548.06/404,688
6. Step 6: Final answer
   x = 1,888,499.73