Finding the Third Proportional to 12,180,511,458 and 19,381,588,227

Step by Step Solution

1. Step 1: Write the proportion equation
   12,180,511,458 : 19,381,588,227 = 19,381,588,227 : x
2. Step 2: Convert to fraction form
   12,180,511,458/19,381,588,227 = 19,381,588,227/x
3. Step 3: Cross multiply
   12,180,511,458x = 19,381,588,227 × 19,381,588,227
4. Step 4: Simplify right side
   12,180,511,458x = 375,645,962,200,984,977,408
5. Step 5: Solve for x
   x = 375,645,962,200,984,977,408/12,180,511,458
6. Step 6: Final answer
   x = 30,839,916,985.12