Finding the Third Proportional to 644,575 and 1,404,696

Step by Step Solution

1. Step 1: Write the proportion equation
   644,575 : 1,404,696 = 1,404,696 : x
2. Step 2: Convert to fraction form
   644,575/1,404,696 = 1,404,696/x
3. Step 3: Cross multiply
   644,575x = 1,404,696 × 1,404,696
4. Step 4: Simplify right side
   644,575x = 1,973,170,852,416
5. Step 5: Solve for x
   x = 1,973,170,852,416/644,575
6. Step 6: Final answer
   x = 3,061,196.68