Finding the Third Proportional to 518,907 and 1,139,970

Step by Step Solution

1. Step 1: Write the proportion equation
   518,907 : 1,139,970 = 1,139,970 : x
2. Step 2: Convert to fraction form
   518,907/1,139,970 = 1,139,970/x
3. Step 3: Cross multiply
   518,907x = 1,139,970 × 1,139,970
4. Step 4: Simplify right side
   518,907x = 1,299,531,600,900
5. Step 5: Solve for x
   x = 1,299,531,600,900/518,907
6. Step 6: Final answer
   x = 2,504,363.21