Finding the Third Proportional to 571,820 and 1,243,240

Step by Step Solution

1. Step 1: Write the proportion equation
   571,820 : 1,243,240 = 1,243,240 : x
2. Step 2: Convert to fraction form
   571,820/1,243,240 = 1,243,240/x
3. Step 3: Cross multiply
   571,820x = 1,243,240 × 1,243,240
4. Step 4: Simplify right side
   571,820x = 1,545,645,697,600
5. Step 5: Solve for x
   x = 1,545,645,697,600/571,820
6. Step 6: Final answer
   x = 2,703,028.40