Finding the Third Proportional to 217,498 and 479,146

Step by Step Solution

1. Step 1: Write the proportion equation
   217,498 : 479,146 = 479,146 : x
2. Step 2: Convert to fraction form
   217,498/479,146 = 479,146/x
3. Step 3: Cross multiply
   217,498x = 479,146 × 479,146
4. Step 4: Simplify right side
   217,498x = 229,580,889,316
5. Step 5: Solve for x
   x = 229,580,889,316/217,498
6. Step 6: Final answer
   x = 1,055,554.02