Finding the Third Proportional to 611,748 and 1,321,896

Step by Step Solution

1. Step 1: Write the proportion equation
   611,748 : 1,321,896 = 1,321,896 : x
2. Step 2: Convert to fraction form
   611,748/1,321,896 = 1,321,896/x
3. Step 3: Cross multiply
   611,748x = 1,321,896 × 1,321,896
4. Step 4: Simplify right side
   611,748x = 1,747,409,034,816
5. Step 5: Solve for x
   x = 1,747,409,034,816/611,748
6. Step 6: Final answer
   x = 2,856,419.69