Finding the Third Proportional to 518,912 and 1,139,980

Step by Step Solution

1. Step 1: Write the proportion equation
   518,912 : 1,139,980 = 1,139,980 : x
2. Step 2: Convert to fraction form
   518,912/1,139,980 = 1,139,980/x
3. Step 3: Cross multiply
   518,912x = 1,139,980 × 1,139,980
4. Step 4: Simplify right side
   518,912x = 1,299,554,400,400
5. Step 5: Solve for x
   x = 1,299,554,400,400/518,912
6. Step 6: Final answer
   x = 2,504,383.02