Finding the Third Proportional to 356,958 and 553,560.75

Step by Step Solution

1. Step 1: Write the proportion equation
   356,958 : 553,560.75 = 553,560.75 : x
2. Step 2: Convert to fraction form
   356,958/553,560.75 = 553,560.75/x
3. Step 3: Cross multiply
   356,958x = 553,560.75 × 553,560.75
4. Step 4: Simplify right side
   356,958x = 306,429,503,940.56
5. Step 5: Solve for x
   x = 306,429,503,940.56/356,958
6. Step 6: Final answer
   x = 858,446.94