Finding the Third Proportional to 1,350,640 and 3,188,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350,640 : 3,188,240 = 3,188,240 : x
2. Step 2: Convert to fraction form
   1,350,640/3,188,240 = 3,188,240/x
3. Step 3: Cross multiply
   1,350,640x = 3,188,240 × 3,188,240
4. Step 4: Simplify right side
   1,350,640x = 10,164,874,297,600
5. Step 5: Solve for x
   x = 10,164,874,297,600/1,350,640
6. Step 6: Final answer
   x = 7,525,968.65