Finding the Third Proportional to 1,272,016 and 1,721,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,016 : 1,721,400 = 1,721,400 : x
2. Step 2: Convert to fraction form
   1,272,016/1,721,400 = 1,721,400/x
3. Step 3: Cross multiply
   1,272,016x = 1,721,400 × 1,721,400
4. Step 4: Simplify right side
   1,272,016x = 2,963,217,960,000
5. Step 5: Solve for x
   x = 2,963,217,960,000/1,272,016
6. Step 6: Final answer
   x = 2,329,544.57