Finding the Third Proportional to 8,309,968 and 12,431,832

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,968 : 12,431,832 = 12,431,832 : x
2. Step 2: Convert to fraction form
   8,309,968/12,431,832 = 12,431,832/x
3. Step 3: Cross multiply
   8,309,968x = 12,431,832 × 12,431,832
4. Step 4: Simplify right side
   8,309,968x = 154,550,446,876,224
5. Step 5: Solve for x
   x = 154,550,446,876,224/8,309,968
6. Step 6: Final answer
   x = 18,598,200.00