Finding the Third Proportional to 2,129,302,836 and 4,659,328,812

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,302,836 : 4,659,328,812 = 4,659,328,812 : x
2. Step 2: Convert to fraction form
   2,129,302,836/4,659,328,812 = 4,659,328,812/x
3. Step 3: Cross multiply
   2,129,302,836x = 4,659,328,812 × 4,659,328,812
4. Step 4: Simplify right side
   2,129,302,836x = 21,709,344,978,333,331,456
5. Step 5: Solve for x
   x = 21,709,344,978,333,331,456/2,129,302,836
6. Step 6: Final answer
   x = 10,195,517,805.78