Finding the Third Proportional to 8,708,806 and 18,455,870

Step by Step Solution

1. Step 1: Write the proportion equation
   8,708,806 : 18,455,870 = 18,455,870 : x
2. Step 2: Convert to fraction form
   8,708,806/18,455,870 = 18,455,870/x
3. Step 3: Cross multiply
   8,708,806x = 18,455,870 × 18,455,870
4. Step 4: Simplify right side
   8,708,806x = 340,619,137,456,900
5. Step 5: Solve for x
   x = 340,619,137,456,900/8,708,806
6. Step 6: Final answer
   x = 39,112,036.42