Finding the Third Proportional to 664,586 and 1,423,672

Step by Step Solution

1. Step 1: Write the proportion equation
   664,586 : 1,423,672 = 1,423,672 : x
2. Step 2: Convert to fraction form
   664,586/1,423,672 = 1,423,672/x
3. Step 3: Cross multiply
   664,586x = 1,423,672 × 1,423,672
4. Step 4: Simplify right side
   664,586x = 2,026,841,963,584
5. Step 5: Solve for x
   x = 2,026,841,963,584/664,586
6. Step 6: Final answer
   x = 3,049,781.31