Finding the Third Proportional to 8,564,854,243.78 and 13,093,454,801.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564,854,243.78 : 13,093,454,801.39 = 13,093,454,801.39 : x
2. Step 2: Convert to fraction form
   8,564,854,243.78/13,093,454,801.39 = 13,093,454,801.39/x
3. Step 3: Cross multiply
   8,564,854,243.78x = 13,093,454,801.39 × 13,093,454,801.39
4. Step 4: Simplify right side
   8,564,854,243.78x = 171,438,558,636,042,813,440
5. Step 5: Solve for x
   x = 171,438,558,636,042,813,440/8,564,854,243.78
6. Step 6: Final answer
   x = 20,016,517,941.39