Finding the Third Proportional to 2,870,438 and 3,900,006

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870,438 : 3,900,006 = 3,900,006 : x
2. Step 2: Convert to fraction form
   2,870,438/3,900,006 = 3,900,006/x
3. Step 3: Cross multiply
   2,870,438x = 3,900,006 × 3,900,006
4. Step 4: Simplify right side
   2,870,438x = 15,210,046,800,036
5. Step 5: Solve for x
   x = 15,210,046,800,036/2,870,438
6. Step 6: Final answer
   x = 5,298,859.20