Finding the Third Proportional to 542,388 and 1,179,912

Step by Step Solution

1. Step 1: Write the proportion equation
   542,388 : 1,179,912 = 1,179,912 : x
2. Step 2: Convert to fraction form
   542,388/1,179,912 = 1,179,912/x
3. Step 3: Cross multiply
   542,388x = 1,179,912 × 1,179,912
4. Step 4: Simplify right side
   542,388x = 1,392,192,327,744
5. Step 5: Solve for x
   x = 1,392,192,327,744/542,388
6. Step 6: Final answer
   x = 2,566,783.06