Finding the Third Proportional to 664,688 and 1,462,288

Step by Step Solution

1. Step 1: Write the proportion equation
   664,688 : 1,462,288 = 1,462,288 : x
2. Step 2: Convert to fraction form
   664,688/1,462,288 = 1,462,288/x
3. Step 3: Cross multiply
   664,688x = 1,462,288 × 1,462,288
4. Step 4: Simplify right side
   664,688x = 2,138,286,194,944
5. Step 5: Solve for x
   x = 2,138,286,194,944/664,688
6. Step 6: Final answer
   x = 3,216,977.28