Finding the Third Proportional to 111,790 and 169,130

Step by Step Solution

1. Step 1: Write the proportion equation
   111,790 : 169,130 = 169,130 : x
2. Step 2: Convert to fraction form
   111,790/169,130 = 169,130/x
3. Step 3: Cross multiply
   111,790x = 169,130 × 169,130
4. Step 4: Simplify right side
   111,790x = 28,604,956,900
5. Step 5: Solve for x
   x = 28,604,956,900/111,790
6. Step 6: Final answer
   x = 255,881.18