Finding the Third Proportional to 685,044 and 1,054,242

Step by Step Solution

1. Step 1: Write the proportion equation
   685,044 : 1,054,242 = 1,054,242 : x
2. Step 2: Convert to fraction form
   685,044/1,054,242 = 1,054,242/x
3. Step 3: Cross multiply
   685,044x = 1,054,242 × 1,054,242
4. Step 4: Simplify right side
   685,044x = 1,111,426,194,564
5. Step 5: Solve for x
   x = 1,111,426,194,564/685,044
6. Step 6: Final answer
   x = 1,622,415.78