Finding the Third Proportional to 379,571.50 and 573,278

Step by Step Solution

1. Step 1: Write the proportion equation
   379,571.50 : 573,278 = 573,278 : x
2. Step 2: Convert to fraction form
   379,571.50/573,278 = 573,278/x
3. Step 3: Cross multiply
   379,571.50x = 573,278 × 573,278
4. Step 4: Simplify right side
   379,571.50x = 328,647,665,284
5. Step 5: Solve for x
   x = 328,647,665,284/379,571.50
6. Step 6: Final answer
   x = 865,838.62