Finding the Third Proportional to 9,142,538 and 19,660,996

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142,538 : 19,660,996 = 19,660,996 : x
2. Step 2: Convert to fraction form
   9,142,538/19,660,996 = 19,660,996/x
3. Step 3: Cross multiply
   9,142,538x = 19,660,996 × 19,660,996
4. Step 4: Simplify right side
   9,142,538x = 386,554,763,712,016
5. Step 5: Solve for x
   x = 386,554,763,712,016/9,142,538
6. Step 6: Final answer
   x = 42,280,903.15