Finding the Third Proportional to 8,378,023,128 and 12,494,381,454

Step by Step Solution

1. Step 1: Write the proportion equation
   8,378,023,128 : 12,494,381,454 = 12,494,381,454 : x
2. Step 2: Convert to fraction form
   8,378,023,128/12,494,381,454 = 12,494,381,454/x
3. Step 3: Cross multiply
   8,378,023,128x = 12,494,381,454 × 12,494,381,454
4. Step 4: Simplify right side
   8,378,023,128x = 156,109,567,918,059,159,552
5. Step 5: Solve for x
   x = 156,109,567,918,059,159,552/8,378,023,128
6. Step 6: Final answer
   x = 18,633,222,364.39