Finding the Third Proportional to 1,418,317 and 2,128,926

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,317 : 2,128,926 = 2,128,926 : x
2. Step 2: Convert to fraction form
   1,418,317/2,128,926 = 2,128,926/x
3. Step 3: Cross multiply
   1,418,317x = 2,128,926 × 2,128,926
4. Step 4: Simplify right side
   1,418,317x = 4,532,325,913,476
5. Step 5: Solve for x
   x = 4,532,325,913,476/1,418,317
6. Step 6: Final answer
   x = 3,195,566.23