Finding the Third Proportional to 918,086 and 1,988,630

Step by Step Solution

1. Step 1: Write the proportion equation
   918,086 : 1,988,630 = 1,988,630 : x
2. Step 2: Convert to fraction form
   918,086/1,988,630 = 1,988,630/x
3. Step 3: Cross multiply
   918,086x = 1,988,630 × 1,988,630
4. Step 4: Simplify right side
   918,086x = 3,954,649,276,900
5. Step 5: Solve for x
   x = 3,954,649,276,900/918,086
6. Step 6: Final answer
   x = 4,307,493.28