Finding the Third Proportional to 404,909 and 886,090

Step by Step Solution

1. Step 1: Write the proportion equation
   404,909 : 886,090 = 886,090 : x
2. Step 2: Convert to fraction form
   404,909/886,090 = 886,090/x
3. Step 3: Cross multiply
   404,909x = 886,090 × 886,090
4. Step 4: Simplify right side
   404,909x = 785,155,488,100
5. Step 5: Solve for x
   x = 785,155,488,100/404,909
6. Step 6: Final answer
   x = 1,939,091.22