Finding the Third Proportional to 918,099 and 1,988,658

Step by Step Solution

1. Step 1: Write the proportion equation
   918,099 : 1,988,658 = 1,988,658 : x
2. Step 2: Convert to fraction form
   918,099/1,988,658 = 1,988,658/x
3. Step 3: Cross multiply
   918,099x = 1,988,658 × 1,988,658
4. Step 4: Simplify right side
   918,099x = 3,954,760,640,964
5. Step 5: Solve for x
   x = 3,954,760,640,964/918,099
6. Step 6: Final answer
   x = 4,307,553.59