Finding the Third Proportional to 8,451,038.81 and 12,678,388.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,451,038.81 : 12,678,388.31 = 12,678,388.31 : x
2. Step 2: Convert to fraction form
   8,451,038.81/12,678,388.31 = 12,678,388.31/x
3. Step 3: Cross multiply
   8,451,038.81x = 12,678,388.31 × 12,678,388.31
4. Step 4: Simplify right side
   8,451,038.81x = 160,741,530,202,536.59
5. Step 5: Solve for x
   x = 160,741,530,202,536.59/8,451,038.81
6. Step 6: Final answer
   x = 19,020,328.01