Finding the Third Proportional to 1,553,078 and 3,181,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553,078 : 3,181,440 = 3,181,440 : x
2. Step 2: Convert to fraction form
   1,553,078/3,181,440 = 3,181,440/x
3. Step 3: Cross multiply
   1,553,078x = 3,181,440 × 3,181,440
4. Step 4: Simplify right side
   1,553,078x = 10,121,560,473,600
5. Step 5: Solve for x
   x = 10,121,560,473,600/1,553,078
6. Step 6: Final answer
   x = 6,517,097.32