Finding the Third Proportional to 12,954,375,711 and 19,902,966,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,954,375,711 : 19,902,966,520.50 = 19,902,966,520.50 : x
2. Step 2: Convert to fraction form
   12,954,375,711/19,902,966,520.50 = 19,902,966,520.50/x
3. Step 3: Cross multiply
   12,954,375,711x = 19,902,966,520.50 × 19,902,966,520.50
4. Step 4: Simplify right side
   12,954,375,711x = 396,128,076,316,143,845,376
5. Step 5: Solve for x
   x = 396,128,076,316,143,845,376/12,954,375,711
6. Step 6: Final answer
   x = 30,578,708,318.59