Finding the Third Proportional to 12,821,408 and 18,333,384

Step by Step Solution

1. Step 1: Write the proportion equation
   12,821,408 : 18,333,384 = 18,333,384 : x
2. Step 2: Convert to fraction form
   12,821,408/18,333,384 = 18,333,384/x
3. Step 3: Cross multiply
   12,821,408x = 18,333,384 × 18,333,384
4. Step 4: Simplify right side
   12,821,408x = 336,112,968,891,456
5. Step 5: Solve for x
   x = 336,112,968,891,456/12,821,408
6. Step 6: Final answer
   x = 26,214,981.14