Finding the Third Proportional to 665,612 and 1,455,639

Step by Step Solution

1. Step 1: Write the proportion equation
   665,612 : 1,455,639 = 1,455,639 : x
2. Step 2: Convert to fraction form
   665,612/1,455,639 = 1,455,639/x
3. Step 3: Cross multiply
   665,612x = 1,455,639 × 1,455,639
4. Step 4: Simplify right side
   665,612x = 2,118,884,898,321
5. Step 5: Solve for x
   x = 2,118,884,898,321/665,612
6. Step 6: Final answer
   x = 3,183,363.43