Finding the Third Proportional to 8,360,772 and 12,218,554

Step by Step Solution

1. Step 1: Write the proportion equation
   8,360,772 : 12,218,554 = 12,218,554 : x
2. Step 2: Convert to fraction form
   8,360,772/12,218,554 = 12,218,554/x
3. Step 3: Cross multiply
   8,360,772x = 12,218,554 × 12,218,554
4. Step 4: Simplify right side
   8,360,772x = 149,293,061,850,916
5. Step 5: Solve for x
   x = 149,293,061,850,916/8,360,772
6. Step 6: Final answer
   x = 17,856,372.81