Finding the Third Proportional to 148,940 and 324,144

Step by Step Solution

1. Step 1: Write the proportion equation
   148,940 : 324,144 = 324,144 : x
2. Step 2: Convert to fraction form
   148,940/324,144 = 324,144/x
3. Step 3: Cross multiply
   148,940x = 324,144 × 324,144
4. Step 4: Simplify right side
   148,940x = 105,069,332,736
5. Step 5: Solve for x
   x = 105,069,332,736/148,940
6. Step 6: Final answer
   x = 705,447.38