Finding the Third Proportional to 213,272 and 493,728

Step by Step Solution

1. Step 1: Write the proportion equation
   213,272 : 493,728 = 493,728 : x
2. Step 2: Convert to fraction form
   213,272/493,728 = 493,728/x
3. Step 3: Cross multiply
   213,272x = 493,728 × 493,728
4. Step 4: Simplify right side
   213,272x = 243,767,337,984
5. Step 5: Solve for x
   x = 243,767,337,984/213,272
6. Step 6: Final answer
   x = 1,142,988.01