Finding the Third Proportional to 3,737,163 and 8,172,258

Step by Step Solution

1. Step 1: Write the proportion equation
   3,737,163 : 8,172,258 = 8,172,258 : x
2. Step 2: Convert to fraction form
   3,737,163/8,172,258 = 8,172,258/x
3. Step 3: Cross multiply
   3,737,163x = 8,172,258 × 8,172,258
4. Step 4: Simplify right side
   3,737,163x = 66,785,800,818,564
5. Step 5: Solve for x
   x = 66,785,800,818,564/3,737,163
6. Step 6: Final answer
   x = 17,870,721.94