Finding the Third Proportional to 774,900 and 1,672,128

Step by Step Solution

1. Step 1: Write the proportion equation
   774,900 : 1,672,128 = 1,672,128 : x
2. Step 2: Convert to fraction form
   774,900/1,672,128 = 1,672,128/x
3. Step 3: Cross multiply
   774,900x = 1,672,128 × 1,672,128
4. Step 4: Simplify right side
   774,900x = 2,796,012,048,384
5. Step 5: Solve for x
   x = 2,796,012,048,384/774,900
6. Step 6: Final answer
   x = 3,608,223.06