Finding the Third Proportional to 148,185.50 and 324,478

Step by Step Solution

1. Step 1: Write the proportion equation
   148,185.50 : 324,478 = 324,478 : x
2. Step 2: Convert to fraction form
   148,185.50/324,478 = 324,478/x
3. Step 3: Cross multiply
   148,185.50x = 324,478 × 324,478
4. Step 4: Simplify right side
   148,185.50x = 105,285,972,484
5. Step 5: Solve for x
   x = 105,285,972,484/148,185.50
6. Step 6: Final answer
   x = 710,501.18