Finding the Third Proportional to 19,804,988 and 42,538,450

Step by Step Solution

1. Step 1: Write the proportion equation
   19,804,988 : 42,538,450 = 42,538,450 : x
2. Step 2: Convert to fraction form
   19,804,988/42,538,450 = 42,538,450/x
3. Step 3: Cross multiply
   19,804,988x = 42,538,450 × 42,538,450
4. Step 4: Simplify right side
   19,804,988x = 1,809,519,728,402,500
5. Step 5: Solve for x
   x = 1,809,519,728,402,500/19,804,988
6. Step 6: Final answer
   x = 91,366,868.21