Finding the Third Proportional to 4,391,985 and 9,517,092

Step by Step Solution

1. Step 1: Write the proportion equation
   4,391,985 : 9,517,092 = 9,517,092 : x
2. Step 2: Convert to fraction form
   4,391,985/9,517,092 = 9,517,092/x
3. Step 3: Cross multiply
   4,391,985x = 9,517,092 × 9,517,092
4. Step 4: Simplify right side
   4,391,985x = 90,575,040,136,464
5. Step 5: Solve for x
   x = 90,575,040,136,464/4,391,985
6. Step 6: Final answer
   x = 20,622,802.70