Finding the Third Proportional to 1,388,260 and 3,042,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,260 : 3,042,420 = 3,042,420 : x
2. Step 2: Convert to fraction form
   1,388,260/3,042,420 = 3,042,420/x
3. Step 3: Cross multiply
   1,388,260x = 3,042,420 × 3,042,420
4. Step 4: Simplify right side
   1,388,260x = 9,256,319,456,400
5. Step 5: Solve for x
   x = 9,256,319,456,400/1,388,260
6. Step 6: Final answer
   x = 6,667,569.08