Finding the Third Proportional to 404,185.50 and 561,981.38

Step by Step Solution

1. Step 1: Write the proportion equation
   404,185.50 : 561,981.38 = 561,981.38 : x
2. Step 2: Convert to fraction form
   404,185.50/561,981.38 = 561,981.38/x
3. Step 3: Cross multiply
   404,185.50x = 561,981.38 × 561,981.38
4. Step 4: Simplify right side
   404,185.50x = 315,823,065,846.89
5. Step 5: Solve for x
   x = 315,823,065,846.89/404,185.50
6. Step 6: Final answer
   x = 781,381.48