Finding the Third Proportional to 81,066,078,660 and 168,841,947,383

Step by Step Solution

1. Step 1: Write the proportion equation
   81,066,078,660 : 168,841,947,383 = 168,841,947,383 : x
2. Step 2: Convert to fraction form
   81,066,078,660/168,841,947,383 = 168,841,947,383/x
3. Step 3: Cross multiply
   81,066,078,660x = 168,841,947,383 × 168,841,947,383
4. Step 4: Simplify right side
   81,066,078,660x = 28,507,603,196,083,739,557,888
5. Step 5: Solve for x
   x = 28,507,603,196,083,739,557,888/81,066,078,660
6. Step 6: Final answer
   x = 351,658,840,137.66