Finding the Third Proportional to 554,398 and 1,191,616

Step by Step Solution

1. Step 1: Write the proportion equation
   554,398 : 1,191,616 = 1,191,616 : x
2. Step 2: Convert to fraction form
   554,398/1,191,616 = 1,191,616/x
3. Step 3: Cross multiply
   554,398x = 1,191,616 × 1,191,616
4. Step 4: Simplify right side
   554,398x = 1,419,948,691,456
5. Step 5: Solve for x
   x = 1,419,948,691,456/554,398
6. Step 6: Final answer
   x = 2,561,244.25