Finding the Third Proportional to 356,594.50 and 553,936

Step by Step Solution

1. Step 1: Write the proportion equation
   356,594.50 : 553,936 = 553,936 : x
2. Step 2: Convert to fraction form
   356,594.50/553,936 = 553,936/x
3. Step 3: Cross multiply
   356,594.50x = 553,936 × 553,936
4. Step 4: Simplify right side
   356,594.50x = 306,845,092,096
5. Step 5: Solve for x
   x = 306,845,092,096/356,594.50
6. Step 6: Final answer
   x = 860,487.45