Finding the Third Proportional to 23,139.75 and 31,356

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.75 : 31,356 = 31,356 : x
2. Step 2: Convert to fraction form
   23,139.75/31,356 = 31,356/x
3. Step 3: Cross multiply
   23,139.75x = 31,356 × 31,356
4. Step 4: Simplify right side
   23,139.75x = 983,198,736
5. Step 5: Solve for x
   x = 983,198,736/23,139.75
6. Step 6: Final answer
   x = 42,489.60