Finding the Third Proportional to 1,386,651 and 2,980,260

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,651 : 2,980,260 = 2,980,260 : x
2. Step 2: Convert to fraction form
   1,386,651/2,980,260 = 2,980,260/x
3. Step 3: Cross multiply
   1,386,651x = 2,980,260 × 2,980,260
4. Step 4: Simplify right side
   1,386,651x = 8,881,949,667,600
5. Step 5: Solve for x
   x = 8,881,949,667,600/1,386,651
6. Step 6: Final answer
   x = 6,405,324.53