Finding the Third Proportional to 1,207,118 and 1,810,821

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,118 : 1,810,821 = 1,810,821 : x
2. Step 2: Convert to fraction form
   1,207,118/1,810,821 = 1,810,821/x
3. Step 3: Cross multiply
   1,207,118x = 1,810,821 × 1,810,821
4. Step 4: Simplify right side
   1,207,118x = 3,279,072,694,041
5. Step 5: Solve for x
   x = 3,279,072,694,041/1,207,118
6. Step 6: Final answer
   x = 2,716,447.52