Finding the Third Proportional to 19,860,203 and 42,855,538

Step by Step Solution

1. Step 1: Write the proportion equation
   19,860,203 : 42,855,538 = 42,855,538 : x
2. Step 2: Convert to fraction form
   19,860,203/42,855,538 = 42,855,538/x
3. Step 3: Cross multiply
   19,860,203x = 42,855,538 × 42,855,538
4. Step 4: Simplify right side
   19,860,203x = 1,836,597,137,269,444
5. Step 5: Solve for x
   x = 1,836,597,137,269,444/19,860,203
6. Step 6: Final answer
   x = 92,476,251.99