Finding the Third Proportional to 79,978,891,452 and 171,994,331,061

Step by Step Solution

1. Step 1: Write the proportion equation
   79,978,891,452 : 171,994,331,061 = 171,994,331,061 : x
2. Step 2: Convert to fraction form
   79,978,891,452/171,994,331,061 = 171,994,331,061/x
3. Step 3: Cross multiply
   79,978,891,452x = 171,994,331,061 × 171,994,331,061
4. Step 4: Simplify right side
   79,978,891,452x = 29,582,049,917,120,867,729,408
5. Step 5: Solve for x
   x = 29,582,049,917,120,867,729,408/79,978,891,452
6. Step 6: Final answer
   x = 369,873,217,546.09