Finding the Third Proportional to 1,272,646 and 1,780,183

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,646 : 1,780,183 = 1,780,183 : x
2. Step 2: Convert to fraction form
   1,272,646/1,780,183 = 1,780,183/x
3. Step 3: Cross multiply
   1,272,646x = 1,780,183 × 1,780,183
4. Step 4: Simplify right side
   1,272,646x = 3,169,051,513,489
5. Step 5: Solve for x
   x = 3,169,051,513,489/1,272,646
6. Step 6: Final answer
   x = 2,490,128.06