Finding the Third Proportional to 515,456 and 1,045,408

Step by Step Solution

1. Step 1: Write the proportion equation
   515,456 : 1,045,408 = 1,045,408 : x
2. Step 2: Convert to fraction form
   515,456/1,045,408 = 1,045,408/x
3. Step 3: Cross multiply
   515,456x = 1,045,408 × 1,045,408
4. Step 4: Simplify right side
   515,456x = 1,092,877,886,464
5. Step 5: Solve for x
   x = 1,092,877,886,464/515,456
6. Step 6: Final answer
   x = 2,120,215.67