Finding the Third Proportional to 644,276 and 1,455,586

Step by Step Solution

1. Step 1: Write the proportion equation
   644,276 : 1,455,586 = 1,455,586 : x
2. Step 2: Convert to fraction form
   644,276/1,455,586 = 1,455,586/x
3. Step 3: Cross multiply
   644,276x = 1,455,586 × 1,455,586
4. Step 4: Simplify right side
   644,276x = 2,118,730,603,396
5. Step 5: Solve for x
   x = 2,118,730,603,396/644,276
6. Step 6: Final answer
   x = 3,288,544.98