Finding the Third Proportional to 1,581,040 and 3,515,792

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581,040 : 3,515,792 = 3,515,792 : x
2. Step 2: Convert to fraction form
   1,581,040/3,515,792 = 3,515,792/x
3. Step 3: Cross multiply
   1,581,040x = 3,515,792 × 3,515,792
4. Step 4: Simplify right side
   1,581,040x = 12,360,793,387,264
5. Step 5: Solve for x
   x = 12,360,793,387,264/1,581,040
6. Step 6: Final answer
   x = 7,818,140.84