Finding the Third Proportional to 543,638 and 1,157,260

Step by Step Solution

1. Step 1: Write the proportion equation
   543,638 : 1,157,260 = 1,157,260 : x
2. Step 2: Convert to fraction form
   543,638/1,157,260 = 1,157,260/x
3. Step 3: Cross multiply
   543,638x = 1,157,260 × 1,157,260
4. Step 4: Simplify right side
   543,638x = 1,339,250,707,600
5. Step 5: Solve for x
   x = 1,339,250,707,600/543,638
6. Step 6: Final answer
   x = 2,463,497.23