Finding the Third Proportional to 572,408 and 1,243,144

Step by Step Solution

1. Step 1: Write the proportion equation
   572,408 : 1,243,144 = 1,243,144 : x
2. Step 2: Convert to fraction form
   572,408/1,243,144 = 1,243,144/x
3. Step 3: Cross multiply
   572,408x = 1,243,144 × 1,243,144
4. Step 4: Simplify right side
   572,408x = 1,545,407,004,736
5. Step 5: Solve for x
   x = 1,545,407,004,736/572,408
6. Step 6: Final answer
   x = 2,699,834.74