Finding the Third Proportional to 8,663,689,411.50 and 18,988,264,809

Step by Step Solution

1. Step 1: Write the proportion equation
   8,663,689,411.50 : 18,988,264,809 = 18,988,264,809 : x
2. Step 2: Convert to fraction form
   8,663,689,411.50/18,988,264,809 = 18,988,264,809/x
3. Step 3: Cross multiply
   8,663,689,411.50x = 18,988,264,809 × 18,988,264,809
4. Step 4: Simplify right side
   8,663,689,411.50x = 360,554,200,456,707,833,856
5. Step 5: Solve for x
   x = 360,554,200,456,707,833,856/8,663,689,411.50
6. Step 6: Final answer
   x = 41,616,704,308.23