Finding the Third Proportional to 8,442,807 and 19,910,483

Step by Step Solution

1. Step 1: Write the proportion equation
   8,442,807 : 19,910,483 = 19,910,483 : x
2. Step 2: Convert to fraction form
   8,442,807/19,910,483 = 19,910,483/x
3. Step 3: Cross multiply
   8,442,807x = 19,910,483 × 19,910,483
4. Step 4: Simplify right side
   8,442,807x = 396,427,333,293,289
5. Step 5: Solve for x
   x = 396,427,333,293,289/8,442,807
6. Step 6: Final answer
   x = 46,954,446.94