Finding the Third Proportional to 664,686 and 1,453,788

Step by Step Solution

1. Step 1: Write the proportion equation
   664,686 : 1,453,788 = 1,453,788 : x
2. Step 2: Convert to fraction form
   664,686/1,453,788 = 1,453,788/x
3. Step 3: Cross multiply
   664,686x = 1,453,788 × 1,453,788
4. Step 4: Simplify right side
   664,686x = 2,113,499,548,944
5. Step 5: Solve for x
   x = 2,113,499,548,944/664,686
6. Step 6: Final answer
   x = 3,179,696.20