Finding the Third Proportional to 8,327,664 and 12,422,178

Step by Step Solution

1. Step 1: Write the proportion equation
   8,327,664 : 12,422,178 = 12,422,178 : x
2. Step 2: Convert to fraction form
   8,327,664/12,422,178 = 12,422,178/x
3. Step 3: Cross multiply
   8,327,664x = 12,422,178 × 12,422,178
4. Step 4: Simplify right side
   8,327,664x = 154,310,506,263,684
5. Step 5: Solve for x
   x = 154,310,506,263,684/8,327,664
6. Step 6: Final answer
   x = 18,529,866.99