Finding the Third Proportional to 9,142,536 and 19,660,992

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142,536 : 19,660,992 = 19,660,992 : x
2. Step 2: Convert to fraction form
   9,142,536/19,660,992 = 19,660,992/x
3. Step 3: Cross multiply
   9,142,536x = 19,660,992 × 19,660,992
4. Step 4: Simplify right side
   9,142,536x = 386,554,606,424,064
5. Step 5: Solve for x
   x = 386,554,606,424,064/9,142,536
6. Step 6: Final answer
   x = 42,280,895.19