Finding the Third Proportional to 890.25 and 1,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   890.25 : 1,300.50 = 1,300.50 : x
2. Step 2: Convert to fraction form
   890.25/1,300.50 = 1,300.50/x
3. Step 3: Cross multiply
   890.25x = 1,300.50 × 1,300.50
4. Step 4: Simplify right side
   890.25x = 1,691,300.25
5. Step 5: Solve for x
   x = 1,691,300.25/890.25
6. Step 6: Final answer
   x = 1,899.80