Finding the Third Proportional to 1,822,788 and 3,988,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,788 : 3,988,688 = 3,988,688 : x
2. Step 2: Convert to fraction form
   1,822,788/3,988,688 = 3,988,688/x
3. Step 3: Cross multiply
   1,822,788x = 3,988,688 × 3,988,688
4. Step 4: Simplify right side
   1,822,788x = 15,909,631,961,344
5. Step 5: Solve for x
   x = 15,909,631,961,344/1,822,788
6. Step 6: Final answer
   x = 8,728,185.59