Finding the Third Proportional to 139,360 and 271,712

Step by Step Solution

1. Step 1: Write the proportion equation
   139,360 : 271,712 = 271,712 : x
2. Step 2: Convert to fraction form
   139,360/271,712 = 271,712/x
3. Step 3: Cross multiply
   139,360x = 271,712 × 271,712
4. Step 4: Simplify right side
   139,360x = 73,827,410,944
5. Step 5: Solve for x
   x = 73,827,410,944/139,360
6. Step 6: Final answer
   x = 529,760.41