Finding the Third Proportional to 815,382 and 1,918,548

Step by Step Solution

1. Step 1: Write the proportion equation
   815,382 : 1,918,548 = 1,918,548 : x
2. Step 2: Convert to fraction form
   815,382/1,918,548 = 1,918,548/x
3. Step 3: Cross multiply
   815,382x = 1,918,548 × 1,918,548
4. Step 4: Simplify right side
   815,382x = 3,680,826,428,304
5. Step 5: Solve for x
   x = 3,680,826,428,304/815,382
6. Step 6: Final answer
   x = 4,514,235.57