Finding the Third Proportional to 363,706.50 and 789,621

Step by Step Solution

1. Step 1: Write the proportion equation
   363,706.50 : 789,621 = 789,621 : x
2. Step 2: Convert to fraction form
   363,706.50/789,621 = 789,621/x
3. Step 3: Cross multiply
   363,706.50x = 789,621 × 789,621
4. Step 4: Simplify right side
   363,706.50x = 623,501,323,641
5. Step 5: Solve for x
   x = 623,501,323,641/363,706.50
6. Step 6: Final answer
   x = 1,714,297.99