Finding the Third Proportional to 822.50 and 1,672

Step by Step Solution

1. Step 1: Write the proportion equation
   822.50 : 1,672 = 1,672 : x
2. Step 2: Convert to fraction form
   822.50/1,672 = 1,672/x
3. Step 3: Cross multiply
   822.50x = 1,672 × 1,672
4. Step 4: Simplify right side
   822.50x = 2,795,584
5. Step 5: Solve for x
   x = 2,795,584/822.50
6. Step 6: Final answer
   x = 3,398.89