Finding the Third Proportional to 712 and 1,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   712 : 1,054.50 = 1,054.50 : x
2. Step 2: Convert to fraction form
   712/1,054.50 = 1,054.50/x
3. Step 3: Cross multiply
   712x = 1,054.50 × 1,054.50
4. Step 4: Simplify right side
   712x = 1,111,970.25
5. Step 5: Solve for x
   x = 1,111,970.25/712
6. Step 6: Final answer
   x = 1,561.76