Finding the Third Proportional to 4,619,262,879 and 9,483,406,912

Step by Step Solution

1. Step 1: Write the proportion equation
   4,619,262,879 : 9,483,406,912 = 9,483,406,912 : x
2. Step 2: Convert to fraction form
   4,619,262,879/9,483,406,912 = 9,483,406,912/x
3. Step 3: Cross multiply
   4,619,262,879x = 9,483,406,912 × 9,483,406,912
4. Step 4: Simplify right side
   4,619,262,879x = 89,935,006,658,569,371,648
5. Step 5: Solve for x
   x = 89,935,006,658,569,371,648/4,619,262,879
6. Step 6: Final answer
   x = 19,469,558,025.68