Finding the Third Proportional to 542,630 and 1,178,644

Step by Step Solution

1. Step 1: Write the proportion equation
   542,630 : 1,178,644 = 1,178,644 : x
2. Step 2: Convert to fraction form
   542,630/1,178,644 = 1,178,644/x
3. Step 3: Cross multiply
   542,630x = 1,178,644 × 1,178,644
4. Step 4: Simplify right side
   542,630x = 1,389,201,678,736
5. Step 5: Solve for x
   x = 1,389,201,678,736/542,630
6. Step 6: Final answer
   x = 2,560,126.93