Finding the Third Proportional to 1,428,812 and 2,176,716

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,812 : 2,176,716 = 2,176,716 : x
2. Step 2: Convert to fraction form
   1,428,812/2,176,716 = 2,176,716/x
3. Step 3: Cross multiply
   1,428,812x = 2,176,716 × 2,176,716
4. Step 4: Simplify right side
   1,428,812x = 4,738,092,544,656
5. Step 5: Solve for x
   x = 4,738,092,544,656/1,428,812
6. Step 6: Final answer
   x = 3,316,106.35