Finding the Third Proportional to 698,778 and 1,054,809

Step by Step Solution

1. Step 1: Write the proportion equation
   698,778 : 1,054,809 = 1,054,809 : x
2. Step 2: Convert to fraction form
   698,778/1,054,809 = 1,054,809/x
3. Step 3: Cross multiply
   698,778x = 1,054,809 × 1,054,809
4. Step 4: Simplify right side
   698,778x = 1,112,622,026,481
5. Step 5: Solve for x
   x = 1,112,622,026,481/698,778
6. Step 6: Final answer
   x = 1,592,239.63