Finding the Third Proportional to 780.50 and 882.50

Step by Step Solution

1. Step 1: Write the proportion equation
   780.50 : 882.50 = 882.50 : x
2. Step 2: Convert to fraction form
   780.50/882.50 = 882.50/x
3. Step 3: Cross multiply
   780.50x = 882.50 × 882.50
4. Step 4: Simplify right side
   780.50x = 778,806.25
5. Step 5: Solve for x
   x = 778,806.25/780.50
6. Step 6: Final answer
   x = 997.83