Finding the Third Proportional to 12,954,375,465 and 19,902,966,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,954,375,465 : 19,902,966,136.50 = 19,902,966,136.50 : x
2. Step 2: Convert to fraction form
   12,954,375,465/19,902,966,136.50 = 19,902,966,136.50/x
3. Step 3: Cross multiply
   12,954,375,465x = 19,902,966,136.50 × 19,902,966,136.50
4. Step 4: Simplify right side
   12,954,375,465x = 396,128,061,030,665,748,480
5. Step 5: Solve for x
   x = 396,128,061,030,665,748,480/12,954,375,465
6. Step 6: Final answer
   x = 30,578,707,719.33