Finding the Third Proportional to 8,218,949 and 13,089,500

Step by Step Solution

1. Step 1: Write the proportion equation
   8,218,949 : 13,089,500 = 13,089,500 : x
2. Step 2: Convert to fraction form
   8,218,949/13,089,500 = 13,089,500/x
3. Step 3: Cross multiply
   8,218,949x = 13,089,500 × 13,089,500
4. Step 4: Simplify right side
   8,218,949x = 171,335,010,250,000
5. Step 5: Solve for x
   x = 171,335,010,250,000/8,218,949
6. Step 6: Final answer
   x = 20,846,340.60