Finding the Third Proportional to 1,189,858 and 1,812,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,858 : 1,812,671.50 = 1,812,671.50 : x
2. Step 2: Convert to fraction form
   1,189,858/1,812,671.50 = 1,812,671.50/x
3. Step 3: Cross multiply
   1,189,858x = 1,812,671.50 × 1,812,671.50
4. Step 4: Simplify right side
   1,189,858x = 3,285,777,966,912.25
5. Step 5: Solve for x
   x = 3,285,777,966,912.25/1,189,858
6. Step 6: Final answer
   x = 2,761,487.48