Finding the Third Proportional to 404,778 and 891,054

Step by Step Solution

1. Step 1: Write the proportion equation
   404,778 : 891,054 = 891,054 : x
2. Step 2: Convert to fraction form
   404,778/891,054 = 891,054/x
3. Step 3: Cross multiply
   404,778x = 891,054 × 891,054
4. Step 4: Simplify right side
   404,778x = 793,977,230,916
5. Step 5: Solve for x
   x = 793,977,230,916/404,778
6. Step 6: Final answer
   x = 1,961,512.81