Finding the Third Proportional to 271,158 and 517,712

Step by Step Solution

1. Step 1: Write the proportion equation
   271,158 : 517,712 = 517,712 : x
2. Step 2: Convert to fraction form
   271,158/517,712 = 517,712/x
3. Step 3: Cross multiply
   271,158x = 517,712 × 517,712
4. Step 4: Simplify right side
   271,158x = 268,025,714,944
5. Step 5: Solve for x
   x = 268,025,714,944/271,158
6. Step 6: Final answer
   x = 988,448.49