Finding the Third Proportional to 1,216.31 and 1,900.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.31 : 1,900.31 = 1,900.31 : x
2. Step 2: Convert to fraction form
   1,216.31/1,900.31 = 1,900.31/x
3. Step 3: Cross multiply
   1,216.31x = 1,900.31 × 1,900.31
4. Step 4: Simplify right side
   1,216.31x = 3,611,187.60
5. Step 5: Solve for x
   x = 3,611,187.60/1,216.31
6. Step 6: Final answer
   x = 2,968.96