Finding the Third Proportional to 644,214 and 1,455,460

Step by Step Solution

1. Step 1: Write the proportion equation
   644,214 : 1,455,460 = 1,455,460 : x
2. Step 2: Convert to fraction form
   644,214/1,455,460 = 1,455,460/x
3. Step 3: Cross multiply
   644,214x = 1,455,460 × 1,455,460
4. Step 4: Simplify right side
   644,214x = 2,118,363,811,600
5. Step 5: Solve for x
   x = 2,118,363,811,600/644,214
6. Step 6: Final answer
   x = 3,288,292.11