Finding the Third Proportional to 1,819,712 and 3,970,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819,712 : 3,970,688 = 3,970,688 : x
2. Step 2: Convert to fraction form
   1,819,712/3,970,688 = 3,970,688/x
3. Step 3: Cross multiply
   1,819,712x = 3,970,688 × 3,970,688
4. Step 4: Simplify right side
   1,819,712x = 15,766,363,193,344
5. Step 5: Solve for x
   x = 15,766,363,193,344/1,819,712
6. Step 6: Final answer
   x = 8,664,207.96