Finding the Third Proportional to 1,698,978 and 3,649,828

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698,978 : 3,649,828 = 3,649,828 : x
2. Step 2: Convert to fraction form
   1,698,978/3,649,828 = 3,649,828/x
3. Step 3: Cross multiply
   1,698,978x = 3,649,828 × 3,649,828
4. Step 4: Simplify right side
   1,698,978x = 13,321,244,429,584
5. Step 5: Solve for x
   x = 13,321,244,429,584/1,698,978
6. Step 6: Final answer
   x = 7,840,739.80