Finding the Third Proportional to 1,021,356 and 1,431,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021,356 : 1,431,216 = 1,431,216 : x
2. Step 2: Convert to fraction form
   1,021,356/1,431,216 = 1,431,216/x
3. Step 3: Cross multiply
   1,021,356x = 1,431,216 × 1,431,216
4. Step 4: Simplify right side
   1,021,356x = 2,048,379,238,656
5. Step 5: Solve for x
   x = 2,048,379,238,656/1,021,356
6. Step 6: Final answer
   x = 2,005,548.74