Finding the Third Proportional to 21,303 and 31,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,303 : 31,891.50 = 31,891.50 : x
2. Step 2: Convert to fraction form
   21,303/31,891.50 = 31,891.50/x
3. Step 3: Cross multiply
   21,303x = 31,891.50 × 31,891.50
4. Step 4: Simplify right side
   21,303x = 1,017,067,772.25
5. Step 5: Solve for x
   x = 1,017,067,772.25/21,303
6. Step 6: Final answer
   x = 47,742.94