Finding the Third Proportional to 672 and 1,062.50

Step by Step Solution

1. Step 1: Write the proportion equation
   672 : 1,062.50 = 1,062.50 : x
2. Step 2: Convert to fraction form
   672/1,062.50 = 1,062.50/x
3. Step 3: Cross multiply
   672x = 1,062.50 × 1,062.50
4. Step 4: Simplify right side
   672x = 1,128,906.25
5. Step 5: Solve for x
   x = 1,128,906.25/672
6. Step 6: Final answer
   x = 1,679.92