Finding the Third Proportional to 917,814 and 1,988,142

Step by Step Solution

1. Step 1: Write the proportion equation
   917,814 : 1,988,142 = 1,988,142 : x
2. Step 2: Convert to fraction form
   917,814/1,988,142 = 1,988,142/x
3. Step 3: Cross multiply
   917,814x = 1,988,142 × 1,988,142
4. Step 4: Simplify right side
   917,814x = 3,952,708,612,164
5. Step 5: Solve for x
   x = 3,952,708,612,164/917,814
6. Step 6: Final answer
   x = 4,306,655.39