Finding the Third Proportional to 813,216 and 1,264,112

Step by Step Solution

1. Step 1: Write the proportion equation
   813,216 : 1,264,112 = 1,264,112 : x
2. Step 2: Convert to fraction form
   813,216/1,264,112 = 1,264,112/x
3. Step 3: Cross multiply
   813,216x = 1,264,112 × 1,264,112
4. Step 4: Simplify right side
   813,216x = 1,597,979,148,544
5. Step 5: Solve for x
   x = 1,597,979,148,544/813,216
6. Step 6: Final answer
   x = 1,965,011.94