Finding the Third Proportional to 19,973,540 and 42,980,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,973,540 : 42,980,721.50 = 42,980,721.50 : x
2. Step 2: Convert to fraction form
   19,973,540/42,980,721.50 = 42,980,721.50/x
3. Step 3: Cross multiply
   19,973,540x = 42,980,721.50 × 42,980,721.50
4. Step 4: Simplify right side
   19,973,540x = 1,847,342,420,660,562.25
5. Step 5: Solve for x
   x = 1,847,342,420,660,562.25/19,973,540
6. Step 6: Final answer
   x = 92,489,484.62