Finding the Third Proportional to 1,590,752,380.78 and 3,456,857,629.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590,752,380.78 : 3,456,857,629.69 = 3,456,857,629.69 : x
2. Step 2: Convert to fraction form
   1,590,752,380.78/3,456,857,629.69 = 3,456,857,629.69/x
3. Step 3: Cross multiply
   1,590,752,380.78x = 3,456,857,629.69 × 3,456,857,629.69
4. Step 4: Simplify right side
   1,590,752,380.78x = 11,949,864,671,929,372,672
5. Step 5: Solve for x
   x = 11,949,864,671,929,372,672/1,590,752,380.78
6. Step 6: Final answer
   x = 7,512,083,474.65