Finding the Third Proportional to 1,478,393 and 3,177,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478,393 : 3,177,640 = 3,177,640 : x
2. Step 2: Convert to fraction form
   1,478,393/3,177,640 = 3,177,640/x
3. Step 3: Cross multiply
   1,478,393x = 3,177,640 × 3,177,640
4. Step 4: Simplify right side
   1,478,393x = 10,097,395,969,600
5. Step 5: Solve for x
   x = 10,097,395,969,600/1,478,393
6. Step 6: Final answer
   x = 6,829,980.91