Finding the Third Proportional to 516,408 and 1,061,328

Step by Step Solution

1. Step 1: Write the proportion equation
   516,408 : 1,061,328 = 1,061,328 : x
2. Step 2: Convert to fraction form
   516,408/1,061,328 = 1,061,328/x
3. Step 3: Cross multiply
   516,408x = 1,061,328 × 1,061,328
4. Step 4: Simplify right side
   516,408x = 1,126,417,123,584
5. Step 5: Solve for x
   x = 1,126,417,123,584/516,408
6. Step 6: Final answer
   x = 2,181,254.21