Finding the Third Proportional to 13,161,354 and 19,907,951

Step by Step Solution

1. Step 1: Write the proportion equation
   13,161,354 : 19,907,951 = 19,907,951 : x
2. Step 2: Convert to fraction form
   13,161,354/19,907,951 = 19,907,951/x
3. Step 3: Cross multiply
   13,161,354x = 19,907,951 × 19,907,951
4. Step 4: Simplify right side
   13,161,354x = 396,326,513,018,401
5. Step 5: Solve for x
   x = 396,326,513,018,401/13,161,354
6. Step 6: Final answer
   x = 30,112,898.19