Finding the Third Proportional to 171,729 and 262,710

Step by Step Solution

1. Step 1: Write the proportion equation
   171,729 : 262,710 = 262,710 : x
2. Step 2: Convert to fraction form
   171,729/262,710 = 262,710/x
3. Step 3: Cross multiply
   171,729x = 262,710 × 262,710
4. Step 4: Simplify right side
   171,729x = 69,016,544,100
5. Step 5: Solve for x
   x = 69,016,544,100/171,729
6. Step 6: Final answer
   x = 401,892.19