Finding the Third Proportional to 611,897 and 1,307,872

Step by Step Solution

1. Step 1: Write the proportion equation
   611,897 : 1,307,872 = 1,307,872 : x
2. Step 2: Convert to fraction form
   611,897/1,307,872 = 1,307,872/x
3. Step 3: Cross multiply
   611,897x = 1,307,872 × 1,307,872
4. Step 4: Simplify right side
   611,897x = 1,710,529,168,384
5. Step 5: Solve for x
   x = 1,710,529,168,384/611,897
6. Step 6: Final answer
   x = 2,795,452.78