Finding the Third Proportional to 8,377,812 and 12,810,366

Step by Step Solution

1. Step 1: Write the proportion equation
   8,377,812 : 12,810,366 = 12,810,366 : x
2. Step 2: Convert to fraction form
   8,377,812/12,810,366 = 12,810,366/x
3. Step 3: Cross multiply
   8,377,812x = 12,810,366 × 12,810,366
4. Step 4: Simplify right side
   8,377,812x = 164,105,477,053,956
5. Step 5: Solve for x
   x = 164,105,477,053,956/8,377,812
6. Step 6: Final answer
   x = 19,588,106.90