Finding the Third Proportional to 664,578 and 1,423,656

Step by Step Solution

1. Step 1: Write the proportion equation
   664,578 : 1,423,656 = 1,423,656 : x
2. Step 2: Convert to fraction form
   664,578/1,423,656 = 1,423,656/x
3. Step 3: Cross multiply
   664,578x = 1,423,656 × 1,423,656
4. Step 4: Simplify right side
   664,578x = 2,026,796,406,336
5. Step 5: Solve for x
   x = 2,026,796,406,336/664,578
6. Step 6: Final answer
   x = 3,049,749.47