Finding the Third Proportional to 3,988,244 and 8,698,288

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988,244 : 8,698,288 = 8,698,288 : x
2. Step 2: Convert to fraction form
   3,988,244/8,698,288 = 8,698,288/x
3. Step 3: Cross multiply
   3,988,244x = 8,698,288 × 8,698,288
4. Step 4: Simplify right side
   3,988,244x = 75,660,214,130,944
5. Step 5: Solve for x
   x = 75,660,214,130,944/3,988,244
6. Step 6: Final answer
   x = 18,970,808.74