Finding the Third Proportional to 568,155 and 1,243,200

Step by Step Solution

1. Step 1: Write the proportion equation
   568,155 : 1,243,200 = 1,243,200 : x
2. Step 2: Convert to fraction form
   568,155/1,243,200 = 1,243,200/x
3. Step 3: Cross multiply
   568,155x = 1,243,200 × 1,243,200
4. Step 4: Simplify right side
   568,155x = 1,545,546,240,000
5. Step 5: Solve for x
   x = 1,545,546,240,000/568,155
6. Step 6: Final answer
   x = 2,720,289.78