Finding the Third Proportional to 665,780 and 1,456,111

Step by Step Solution

1. Step 1: Write the proportion equation
   665,780 : 1,456,111 = 1,456,111 : x
2. Step 2: Convert to fraction form
   665,780/1,456,111 = 1,456,111/x
3. Step 3: Cross multiply
   665,780x = 1,456,111 × 1,456,111
4. Step 4: Simplify right side
   665,780x = 2,120,259,244,321
5. Step 5: Solve for x
   x = 2,120,259,244,321/665,780
6. Step 6: Final answer
   x = 3,184,624.42