Finding the Third Proportional to 394,790.50 and 589,554

Step by Step Solution

1. Step 1: Write the proportion equation
   394,790.50 : 589,554 = 589,554 : x
2. Step 2: Convert to fraction form
   394,790.50/589,554 = 589,554/x
3. Step 3: Cross multiply
   394,790.50x = 589,554 × 589,554
4. Step 4: Simplify right side
   394,790.50x = 347,573,918,916
5. Step 5: Solve for x
   x = 347,573,918,916/394,790.50
6. Step 6: Final answer
   x = 880,400.92