Finding the Third Proportional to 518,908 and 1,139,972

Step by Step Solution

1. Step 1: Write the proportion equation
   518,908 : 1,139,972 = 1,139,972 : x
2. Step 2: Convert to fraction form
   518,908/1,139,972 = 1,139,972/x
3. Step 3: Cross multiply
   518,908x = 1,139,972 × 1,139,972
4. Step 4: Simplify right side
   518,908x = 1,299,536,160,784
5. Step 5: Solve for x
   x = 1,299,536,160,784/518,908
6. Step 6: Final answer
   x = 2,504,367.17