Finding the Third Proportional to 238,132 and 324,290

Step by Step Solution

1. Step 1: Write the proportion equation
   238,132 : 324,290 = 324,290 : x
2. Step 2: Convert to fraction form
   238,132/324,290 = 324,290/x
3. Step 3: Cross multiply
   238,132x = 324,290 × 324,290
4. Step 4: Simplify right side
   238,132x = 105,164,004,100
5. Step 5: Solve for x
   x = 105,164,004,100/238,132
6. Step 6: Final answer
   x = 441,620.63