Finding the Third Proportional to 11,870 and 25,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870 : 25,620.50 = 25,620.50 : x
2. Step 2: Convert to fraction form
   11,870/25,620.50 = 25,620.50/x
3. Step 3: Cross multiply
   11,870x = 25,620.50 × 25,620.50
4. Step 4: Simplify right side
   11,870x = 656,410,020.25
5. Step 5: Solve for x
   x = 656,410,020.25/11,870
6. Step 6: Final answer
   x = 55,299.92