Finding the Third Proportional to 517,908 and 1,129,980

Step by Step Solution

1. Step 1: Write the proportion equation
   517,908 : 1,129,980 = 1,129,980 : x
2. Step 2: Convert to fraction form
   517,908/1,129,980 = 1,129,980/x
3. Step 3: Cross multiply
   517,908x = 1,129,980 × 1,129,980
4. Step 4: Simplify right side
   517,908x = 1,276,854,800,400
5. Step 5: Solve for x
   x = 1,276,854,800,400/517,908
6. Step 6: Final answer
   x = 2,465,408.53