Finding the Third Proportional to 19,804,986 and 42,538,438

Step by Step Solution

1. Step 1: Write the proportion equation
   19,804,986 : 42,538,438 = 42,538,438 : x
2. Step 2: Convert to fraction form
   19,804,986/42,538,438 = 42,538,438/x
3. Step 3: Cross multiply
   19,804,986x = 42,538,438 × 42,538,438
4. Step 4: Simplify right side
   19,804,986x = 1,809,518,707,479,844
5. Step 5: Solve for x
   x = 1,809,518,707,479,844/19,804,986
6. Step 6: Final answer
   x = 91,366,825.88