Finding the Third Proportional to 8,809,322 and 12,405,642

Step by Step Solution

1. Step 1: Write the proportion equation
   8,809,322 : 12,405,642 = 12,405,642 : x
2. Step 2: Convert to fraction form
   8,809,322/12,405,642 = 12,405,642/x
3. Step 3: Cross multiply
   8,809,322x = 12,405,642 × 12,405,642
4. Step 4: Simplify right side
   8,809,322x = 153,899,953,432,164
5. Step 5: Solve for x
   x = 153,899,953,432,164/8,809,322
6. Step 6: Final answer
   x = 17,470,124.65