Finding the Third Proportional to 918,087 and 1,988,634

Step by Step Solution

1. Step 1: Write the proportion equation
   918,087 : 1,988,634 = 1,988,634 : x
2. Step 2: Convert to fraction form
   918,087/1,988,634 = 1,988,634/x
3. Step 3: Cross multiply
   918,087x = 1,988,634 × 1,988,634
4. Step 4: Simplify right side
   918,087x = 3,954,665,185,956
5. Step 5: Solve for x
   x = 3,954,665,185,956/918,087
6. Step 6: Final answer
   x = 4,307,505.92