Finding the Third Proportional to 1,657,920 and 2,560,140

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657,920 : 2,560,140 = 2,560,140 : x
2. Step 2: Convert to fraction form
   1,657,920/2,560,140 = 2,560,140/x
3. Step 3: Cross multiply
   1,657,920x = 2,560,140 × 2,560,140
4. Step 4: Simplify right side
   1,657,920x = 6,554,316,819,600
5. Step 5: Solve for x
   x = 6,554,316,819,600/1,657,920
6. Step 6: Final answer
   x = 3,953,337.21