Finding the Third Proportional to 1,321,808 and 2,100,813

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,808 : 2,100,813 = 2,100,813 : x
2. Step 2: Convert to fraction form
   1,321,808/2,100,813 = 2,100,813/x
3. Step 3: Cross multiply
   1,321,808x = 2,100,813 × 2,100,813
4. Step 4: Simplify right side
   1,321,808x = 4,413,415,260,969
5. Step 5: Solve for x
   x = 4,413,415,260,969/1,321,808
6. Step 6: Final answer
   x = 3,338,923.10