Finding the Third Proportional to 617,721 and 1,353,540

Step by Step Solution

1. Step 1: Write the proportion equation
   617,721 : 1,353,540 = 1,353,540 : x
2. Step 2: Convert to fraction form
   617,721/1,353,540 = 1,353,540/x
3. Step 3: Cross multiply
   617,721x = 1,353,540 × 1,353,540
4. Step 4: Simplify right side
   617,721x = 1,832,070,531,600
5. Step 5: Solve for x
   x = 1,832,070,531,600/617,721
6. Step 6: Final answer
   x = 2,965,854.38