Finding the Third Proportional to 1,396,308 and 2,106,126

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,308 : 2,106,126 = 2,106,126 : x
2. Step 2: Convert to fraction form
   1,396,308/2,106,126 = 2,106,126/x
3. Step 3: Cross multiply
   1,396,308x = 2,106,126 × 2,106,126
4. Step 4: Simplify right side
   1,396,308x = 4,435,766,727,876
5. Step 5: Solve for x
   x = 4,435,766,727,876/1,396,308
6. Step 6: Final answer
   x = 3,176,782.43