Finding the Third Proportional to 917,880 and 1,988,298

Step by Step Solution

1. Step 1: Write the proportion equation
   917,880 : 1,988,298 = 1,988,298 : x
2. Step 2: Convert to fraction form
   917,880/1,988,298 = 1,988,298/x
3. Step 3: Cross multiply
   917,880x = 1,988,298 × 1,988,298
4. Step 4: Simplify right side
   917,880x = 3,953,328,936,804
5. Step 5: Solve for x
   x = 3,953,328,936,804/917,880
6. Step 6: Final answer
   x = 4,307,021.55