Finding the Third Proportional to 611,721 and 1,347,858

Step by Step Solution

1. Step 1: Write the proportion equation
   611,721 : 1,347,858 = 1,347,858 : x
2. Step 2: Convert to fraction form
   611,721/1,347,858 = 1,347,858/x
3. Step 3: Cross multiply
   611,721x = 1,347,858 × 1,347,858
4. Step 4: Simplify right side
   611,721x = 1,816,721,188,164
5. Step 5: Solve for x
   x = 1,816,721,188,164/611,721
6. Step 6: Final answer
   x = 2,969,852.58