Finding the Third Proportional to 8,381,772 and 12,415,506

Step by Step Solution

1. Step 1: Write the proportion equation
   8,381,772 : 12,415,506 = 12,415,506 : x
2. Step 2: Convert to fraction form
   8,381,772/12,415,506 = 12,415,506/x
3. Step 3: Cross multiply
   8,381,772x = 12,415,506 × 12,415,506
4. Step 4: Simplify right side
   8,381,772x = 154,144,789,236,036
5. Step 5: Solve for x
   x = 154,144,789,236,036/8,381,772
6. Step 6: Final answer
   x = 18,390,477.48