Finding the Third Proportional to 362,578.50 and 789,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   362,578.50 : 789,673.50 = 789,673.50 : x
2. Step 2: Convert to fraction form
   362,578.50/789,673.50 = 789,673.50/x
3. Step 3: Cross multiply
   362,578.50x = 789,673.50 × 789,673.50
4. Step 4: Simplify right side
   362,578.50x = 623,584,236,602.25
5. Step 5: Solve for x
   x = 623,584,236,602.25/362,578.50
6. Step 6: Final answer
   x = 1,719,859.94