Finding the Third Proportional to 3,908,928 and 5,979,639

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,928 : 5,979,639 = 5,979,639 : x
2. Step 2: Convert to fraction form
   3,908,928/5,979,639 = 5,979,639/x
3. Step 3: Cross multiply
   3,908,928x = 5,979,639 × 5,979,639
4. Step 4: Simplify right side
   3,908,928x = 35,756,082,570,321
5. Step 5: Solve for x
   x = 35,756,082,570,321/3,908,928
6. Step 6: Final answer
   x = 9,147,286.05