Finding the Third Proportional to 5,178,852 and 8,106,318

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,852 : 8,106,318 = 8,106,318 : x
2. Step 2: Convert to fraction form
   5,178,852/8,106,318 = 8,106,318/x
3. Step 3: Cross multiply
   5,178,852x = 8,106,318 × 8,106,318
4. Step 4: Simplify right side
   5,178,852x = 65,712,391,517,124
5. Step 5: Solve for x
   x = 65,712,391,517,124/5,178,852
6. Step 6: Final answer
   x = 12,688,601.94