Finding the Third Proportional to 31,930 and 42,708

Step by Step Solution

1. Step 1: Write the proportion equation
   31,930 : 42,708 = 42,708 : x
2. Step 2: Convert to fraction form
   31,930/42,708 = 42,708/x
3. Step 3: Cross multiply
   31,930x = 42,708 × 42,708
4. Step 4: Simplify right side
   31,930x = 1,823,973,264
5. Step 5: Solve for x
   x = 1,823,973,264/31,930
6. Step 6: Final answer
   x = 57,124.12