Finding the Third Proportional to 21,343.27 and 31,917.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,343.27 : 31,917.60 = 31,917.60 : x
2. Step 2: Convert to fraction form
   21,343.27/31,917.60 = 31,917.60/x
3. Step 3: Cross multiply
   21,343.27x = 31,917.60 × 31,917.60
4. Step 4: Simplify right side
   21,343.27x = 1,018,733,133.65
5. Step 5: Solve for x
   x = 1,018,733,133.65/21,343.27
6. Step 6: Final answer
   x = 47,730.88