Finding the Third Proportional to 851,779 and 1,728,588

Step by Step Solution

1. Step 1: Write the proportion equation
   851,779 : 1,728,588 = 1,728,588 : x
2. Step 2: Convert to fraction form
   851,779/1,728,588 = 1,728,588/x
3. Step 3: Cross multiply
   851,779x = 1,728,588 × 1,728,588
4. Step 4: Simplify right side
   851,779x = 2,988,016,473,744
5. Step 5: Solve for x
   x = 2,988,016,473,744/851,779
6. Step 6: Final answer
   x = 3,507,971.52