Finding the Third Proportional to 217,692 and 479,538

Step by Step Solution

1. Step 1: Write the proportion equation
   217,692 : 479,538 = 479,538 : x
2. Step 2: Convert to fraction form
   217,692/479,538 = 479,538/x
3. Step 3: Cross multiply
   217,692x = 479,538 × 479,538
4. Step 4: Simplify right side
   217,692x = 229,956,693,444
5. Step 5: Solve for x
   x = 229,956,693,444/217,692
6. Step 6: Final answer
   x = 1,056,339.66