Finding the Third Proportional to 542,615 and 1,178,605

Step by Step Solution

1. Step 1: Write the proportion equation
   542,615 : 1,178,605 = 1,178,605 : x
2. Step 2: Convert to fraction form
   542,615/1,178,605 = 1,178,605/x
3. Step 3: Cross multiply
   542,615x = 1,178,605 × 1,178,605
4. Step 4: Simplify right side
   542,615x = 1,389,109,746,025
5. Step 5: Solve for x
   x = 1,389,109,746,025/542,615
6. Step 6: Final answer
   x = 2,560,028.28