Finding the Third Proportional to 815,816 and 1,767,200

Step by Step Solution

1. Step 1: Write the proportion equation
   815,816 : 1,767,200 = 1,767,200 : x
2. Step 2: Convert to fraction form
   815,816/1,767,200 = 1,767,200/x
3. Step 3: Cross multiply
   815,816x = 1,767,200 × 1,767,200
4. Step 4: Simplify right side
   815,816x = 3,122,995,840,000
5. Step 5: Solve for x
   x = 3,122,995,840,000/815,816
6. Step 6: Final answer
   x = 3,828,063.98