Finding the Third Proportional to 815,868 and 1,767,312

Step by Step Solution

1. Step 1: Write the proportion equation
   815,868 : 1,767,312 = 1,767,312 : x
2. Step 2: Convert to fraction form
   815,868/1,767,312 = 1,767,312/x
3. Step 3: Cross multiply
   815,868x = 1,767,312 × 1,767,312
4. Step 4: Simplify right side
   815,868x = 3,123,391,705,344
5. Step 5: Solve for x
   x = 3,123,391,705,344/815,868
6. Step 6: Final answer
   x = 3,828,305.20