Finding the Third Proportional to 1,012,926 and 2,161,431

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,926 : 2,161,431 = 2,161,431 : x
2. Step 2: Convert to fraction form
   1,012,926/2,161,431 = 2,161,431/x
3. Step 3: Cross multiply
   1,012,926x = 2,161,431 × 2,161,431
4. Step 4: Simplify right side
   1,012,926x = 4,671,783,967,761
5. Step 5: Solve for x
   x = 4,671,783,967,761/1,012,926
6. Step 6: Final answer
   x = 4,612,167.10