Finding the Third Proportional to 81,066,078,672 and 168,841,947,404

Step by Step Solution

1. Step 1: Write the proportion equation
   81,066,078,672 : 168,841,947,404 = 168,841,947,404 : x
2. Step 2: Convert to fraction form
   81,066,078,672/168,841,947,404 = 168,841,947,404/x
3. Step 3: Cross multiply
   81,066,078,672x = 168,841,947,404 × 168,841,947,404
4. Step 4: Simplify right side
   81,066,078,672x = 28,507,603,203,175,103,856,640
5. Step 5: Solve for x
   x = 28,507,603,203,175,103,856,640/81,066,078,672
6. Step 6: Final answer
   x = 351,658,840,173.08