Finding the Third Proportional to 3,747,251 and 8,172,179

Step by Step Solution

1. Step 1: Write the proportion equation
   3,747,251 : 8,172,179 = 8,172,179 : x
2. Step 2: Convert to fraction form
   3,747,251/8,172,179 = 8,172,179/x
3. Step 3: Cross multiply
   3,747,251x = 8,172,179 × 8,172,179
4. Step 4: Simplify right side
   3,747,251x = 66,784,509,608,041
5. Step 5: Solve for x
   x = 66,784,509,608,041/3,747,251
6. Step 6: Final answer
   x = 17,822,267.47