Finding the Third Proportional to 3,294,978 and 7,122,888

Step by Step Solution

1. Step 1: Write the proportion equation
   3,294,978 : 7,122,888 = 7,122,888 : x
2. Step 2: Convert to fraction form
   3,294,978/7,122,888 = 7,122,888/x
3. Step 3: Cross multiply
   3,294,978x = 7,122,888 × 7,122,888
4. Step 4: Simplify right side
   3,294,978x = 50,735,533,460,544
5. Step 5: Solve for x
   x = 50,735,533,460,544/3,294,978
6. Step 6: Final answer
   x = 15,397,836.79