Finding the Third Proportional to 148,904 and 324,072

Step by Step Solution

1. Step 1: Write the proportion equation
   148,904 : 324,072 = 324,072 : x
2. Step 2: Convert to fraction form
   148,904/324,072 = 324,072/x
3. Step 3: Cross multiply
   148,904x = 324,072 × 324,072
4. Step 4: Simplify right side
   148,904x = 105,022,661,184
5. Step 5: Solve for x
   x = 105,022,661,184/148,904
6. Step 6: Final answer
   x = 705,304.50