Finding the Third Proportional to 108,899 and 164,990

Step by Step Solution

1. Step 1: Write the proportion equation
   108,899 : 164,990 = 164,990 : x
2. Step 2: Convert to fraction form
   108,899/164,990 = 164,990/x
3. Step 3: Cross multiply
   108,899x = 164,990 × 164,990
4. Step 4: Simplify right side
   108,899x = 27,221,700,100
5. Step 5: Solve for x
   x = 27,221,700,100/108,899
6. Step 6: Final answer
   x = 249,971.99