Finding the Third Proportional to 18,447,790 and 42,707,540

Step by Step Solution

1. Step 1: Write the proportion equation
   18,447,790 : 42,707,540 = 42,707,540 : x
2. Step 2: Convert to fraction form
   18,447,790/42,707,540 = 42,707,540/x
3. Step 3: Cross multiply
   18,447,790x = 42,707,540 × 42,707,540
4. Step 4: Simplify right side
   18,447,790x = 1,823,933,972,851,600
5. Step 5: Solve for x
   x = 1,823,933,972,851,600/18,447,790
6. Step 6: Final answer
   x = 98,870,052.88