Finding the Third Proportional to 4,172,010 and 8,663,760

Step by Step Solution

1. Step 1: Write the proportion equation
   4,172,010 : 8,663,760 = 8,663,760 : x
2. Step 2: Convert to fraction form
   4,172,010/8,663,760 = 8,663,760/x
3. Step 3: Cross multiply
   4,172,010x = 8,663,760 × 8,663,760
4. Step 4: Simplify right side
   4,172,010x = 75,060,737,337,600
5. Step 5: Solve for x
   x = 75,060,737,337,600/4,172,010
6. Step 6: Final answer
   x = 17,991,504.66