Finding the Third Proportional to 31,790 and 73,899

Step by Step Solution

1. Step 1: Write the proportion equation
   31,790 : 73,899 = 73,899 : x
2. Step 2: Convert to fraction form
   31,790/73,899 = 73,899/x
3. Step 3: Cross multiply
   31,790x = 73,899 × 73,899
4. Step 4: Simplify right side
   31,790x = 5,461,062,201
5. Step 5: Solve for x
   x = 5,461,062,201/31,790
6. Step 6: Final answer
   x = 171,785.54