Finding the Third Proportional to 21,393 and 31,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,393 : 31,913.50 = 31,913.50 : x
2. Step 2: Convert to fraction form
   21,393/31,913.50 = 31,913.50/x
3. Step 3: Cross multiply
   21,393x = 31,913.50 × 31,913.50
4. Step 4: Simplify right side
   21,393x = 1,018,471,482.25
5. Step 5: Solve for x
   x = 1,018,471,482.25/21,393
6. Step 6: Final answer
   x = 47,607.70