Finding the Third Proportional to 229,428 and 503,172

Step by Step Solution

1. Step 1: Write the proportion equation
   229,428 : 503,172 = 503,172 : x
2. Step 2: Convert to fraction form
   229,428/503,172 = 503,172/x
3. Step 3: Cross multiply
   229,428x = 503,172 × 503,172
4. Step 4: Simplify right side
   229,428x = 253,182,061,584
5. Step 5: Solve for x
   x = 253,182,061,584/229,428
6. Step 6: Final answer
   x = 1,103,536.02