Finding the Third Proportional to 931.50 and 1,969.31

Step by Step Solution

1. Step 1: Write the proportion equation
   931.50 : 1,969.31 = 1,969.31 : x
2. Step 2: Convert to fraction form
   931.50/1,969.31 = 1,969.31/x
3. Step 3: Cross multiply
   931.50x = 1,969.31 × 1,969.31
4. Step 4: Simplify right side
   931.50x = 3,878,191.72
5. Step 5: Solve for x
   x = 3,878,191.72/931.50
6. Step 6: Final answer
   x = 4,163.38