Finding the Third Proportional to 217,762 and 324,300

Step by Step Solution

1. Step 1: Write the proportion equation
   217,762 : 324,300 = 324,300 : x
2. Step 2: Convert to fraction form
   217,762/324,300 = 324,300/x
3. Step 3: Cross multiply
   217,762x = 324,300 × 324,300
4. Step 4: Simplify right side
   217,762x = 105,170,490,000
5. Step 5: Solve for x
   x = 105,170,490,000/217,762
6. Step 6: Final answer
   x = 482,960.71