Finding the Third Proportional to 820,275 and 1,284,174

Step by Step Solution

1. Step 1: Write the proportion equation
   820,275 : 1,284,174 = 1,284,174 : x
2. Step 2: Convert to fraction form
   820,275/1,284,174 = 1,284,174/x
3. Step 3: Cross multiply
   820,275x = 1,284,174 × 1,284,174
4. Step 4: Simplify right side
   820,275x = 1,649,102,862,276
5. Step 5: Solve for x
   x = 1,649,102,862,276/820,275
6. Step 6: Final answer
   x = 2,010,426.82