Finding the Third Proportional to 172,085 and 404,871

Step by Step Solution

1. Step 1: Write the proportion equation
   172,085 : 404,871 = 404,871 : x
2. Step 2: Convert to fraction form
   172,085/404,871 = 404,871/x
3. Step 3: Cross multiply
   172,085x = 404,871 × 404,871
4. Step 4: Simplify right side
   172,085x = 163,920,526,641
5. Step 5: Solve for x
   x = 163,920,526,641/172,085
6. Step 6: Final answer
   x = 952,555.58