Finding the Third Proportional to 380,582.50 and 818,573

Step by Step Solution

1. Step 1: Write the proportion equation
   380,582.50 : 818,573 = 818,573 : x
2. Step 2: Convert to fraction form
   380,582.50/818,573 = 818,573/x
3. Step 3: Cross multiply
   380,582.50x = 818,573 × 818,573
4. Step 4: Simplify right side
   380,582.50x = 670,061,756,329
5. Step 5: Solve for x
   x = 670,061,756,329/380,582.50
6. Step 6: Final answer
   x = 1,760,621.56