Finding the Third Proportional to 148,928 and 324,630

Step by Step Solution

1. Step 1: Write the proportion equation
   148,928 : 324,630 = 324,630 : x
2. Step 2: Convert to fraction form
   148,928/324,630 = 324,630/x
3. Step 3: Cross multiply
   148,928x = 324,630 × 324,630
4. Step 4: Simplify right side
   148,928x = 105,384,636,900
5. Step 5: Solve for x
   x = 105,384,636,900/148,928
6. Step 6: Final answer
   x = 707,621.38