Finding the Third Proportional to 1,386,642 and 2,980,242

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,642 : 2,980,242 = 2,980,242 : x
2. Step 2: Convert to fraction form
   1,386,642/2,980,242 = 2,980,242/x
3. Step 3: Cross multiply
   1,386,642x = 2,980,242 × 2,980,242
4. Step 4: Simplify right side
   1,386,642x = 8,881,842,378,564
5. Step 5: Solve for x
   x = 8,881,842,378,564/1,386,642
6. Step 6: Final answer
   x = 6,405,288.73