Finding the Third Proportional to 8,267,724 and 12,409,828

Step by Step Solution

1. Step 1: Write the proportion equation
   8,267,724 : 12,409,828 = 12,409,828 : x
2. Step 2: Convert to fraction form
   8,267,724/12,409,828 = 12,409,828/x
3. Step 3: Cross multiply
   8,267,724x = 12,409,828 × 12,409,828
4. Step 4: Simplify right side
   8,267,724x = 154,003,830,989,584
5. Step 5: Solve for x
   x = 154,003,830,989,584/8,267,724
6. Step 6: Final answer
   x = 18,627,113.22