Finding the Third Proportional to 820,488 and 1,772,196

Step by Step Solution

1. Step 1: Write the proportion equation
   820,488 : 1,772,196 = 1,772,196 : x
2. Step 2: Convert to fraction form
   820,488/1,772,196 = 1,772,196/x
3. Step 3: Cross multiply
   820,488x = 1,772,196 × 1,772,196
4. Step 4: Simplify right side
   820,488x = 3,140,678,662,416
5. Step 5: Solve for x
   x = 3,140,678,662,416/820,488
6. Step 6: Final answer
   x = 3,827,817.91