Finding the Third Proportional to 170,866.50 and 374,640

Step by Step Solution

1. Step 1: Write the proportion equation
   170,866.50 : 374,640 = 374,640 : x
2. Step 2: Convert to fraction form
   170,866.50/374,640 = 374,640/x
3. Step 3: Cross multiply
   170,866.50x = 374,640 × 374,640
4. Step 4: Simplify right side
   170,866.50x = 140,355,129,600
5. Step 5: Solve for x
   x = 140,355,129,600/170,866.50
6. Step 6: Final answer
   x = 821,431.52