Finding the Third Proportional to 4,661,940 and 10,989,516

Step by Step Solution

1. Step 1: Write the proportion equation
   4,661,940 : 10,989,516 = 10,989,516 : x
2. Step 2: Convert to fraction form
   4,661,940/10,989,516 = 10,989,516/x
3. Step 3: Cross multiply
   4,661,940x = 10,989,516 × 10,989,516
4. Step 4: Simplify right side
   4,661,940x = 120,769,461,914,256
5. Step 5: Solve for x
   x = 120,769,461,914,256/4,661,940
6. Step 6: Final answer
   x = 25,905,408.89