Finding the Third Proportional to 172,168 and 374,820

Step by Step Solution

1. Step 1: Write the proportion equation
   172,168 : 374,820 = 374,820 : x
2. Step 2: Convert to fraction form
   172,168/374,820 = 374,820/x
3. Step 3: Cross multiply
   172,168x = 374,820 × 374,820
4. Step 4: Simplify right side
   172,168x = 140,490,032,400
5. Step 5: Solve for x
   x = 140,490,032,400/172,168
6. Step 6: Final answer
   x = 816,005.49