Finding the Third Proportional to 778,079,803.50 and 1,680,392,414.25

Step by Step Solution

1. Step 1: Write the proportion equation
   778,079,803.50 : 1,680,392,414.25 = 1,680,392,414.25 : x
2. Step 2: Convert to fraction form
   778,079,803.50/1,680,392,414.25 = 1,680,392,414.25/x
3. Step 3: Cross multiply
   778,079,803.50x = 1,680,392,414.25 × 1,680,392,414.25
4. Step 4: Simplify right side
   778,079,803.50x = 2,823,718,665,868,943,360
5. Step 5: Solve for x
   x = 2,823,718,665,868,943,360/778,079,803.50
6. Step 6: Final answer
   x = 3,629,086,185.21