Finding the Third Proportional to 7,017,978 and 10,578,810

Step by Step Solution

1. Step 1: Write the proportion equation
   7,017,978 : 10,578,810 = 10,578,810 : x
2. Step 2: Convert to fraction form
   7,017,978/10,578,810 = 10,578,810/x
3. Step 3: Cross multiply
   7,017,978x = 10,578,810 × 10,578,810
4. Step 4: Simplify right side
   7,017,978x = 111,911,221,016,100
5. Step 5: Solve for x
   x = 111,911,221,016,100/7,017,978
6. Step 6: Final answer
   x = 15,946,362.47