Finding the Third Proportional to 1,422,784 and 2,170,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422,784 : 2,170,312 = 2,170,312 : x
2. Step 2: Convert to fraction form
   1,422,784/2,170,312 = 2,170,312/x
3. Step 3: Cross multiply
   1,422,784x = 2,170,312 × 2,170,312
4. Step 4: Simplify right side
   1,422,784x = 4,710,254,177,344
5. Step 5: Solve for x
   x = 4,710,254,177,344/1,422,784
6. Step 6: Final answer
   x = 3,310,589.79