Finding the Third Proportional to 21,322,968 and 30,389,508

Step by Step Solution

1. Step 1: Write the proportion equation
   21,322,968 : 30,389,508 = 30,389,508 : x
2. Step 2: Convert to fraction form
   21,322,968/30,389,508 = 30,389,508/x
3. Step 3: Cross multiply
   21,322,968x = 30,389,508 × 30,389,508
4. Step 4: Simplify right side
   21,322,968x = 923,522,196,482,064
5. Step 5: Solve for x
   x = 923,522,196,482,064/21,322,968
6. Step 6: Final answer
   x = 43,311,146.76