Finding the Third Proportional to 8,139,858 and 17,696,890

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,858 : 17,696,890 = 17,696,890 : x
2. Step 2: Convert to fraction form
   8,139,858/17,696,890 = 17,696,890/x
3. Step 3: Cross multiply
   8,139,858x = 17,696,890 × 17,696,890
4. Step 4: Simplify right side
   8,139,858x = 313,179,915,672,100
5. Step 5: Solve for x
   x = 313,179,915,672,100/8,139,858
6. Step 6: Final answer
   x = 38,474,862.30