Finding the Third Proportional to 1,216,713 and 2,816,612

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,713 : 2,816,612 = 2,816,612 : x
2. Step 2: Convert to fraction form
   1,216,713/2,816,612 = 2,816,612/x
3. Step 3: Cross multiply
   1,216,713x = 2,816,612 × 2,816,612
4. Step 4: Simplify right side
   1,216,713x = 7,933,303,158,544
5. Step 5: Solve for x
   x = 7,933,303,158,544/1,216,713
6. Step 6: Final answer
   x = 6,520,274.84