Finding the Third Proportional to 59,143 and 128,131

Step by Step Solution

1. Step 1: Write the proportion equation
   59,143 : 128,131 = 128,131 : x
2. Step 2: Convert to fraction form
   59,143/128,131 = 128,131/x
3. Step 3: Cross multiply
   59,143x = 128,131 × 128,131
4. Step 4: Simplify right side
   59,143x = 16,417,553,161
5. Step 5: Solve for x
   x = 16,417,553,161/59,143
6. Step 6: Final answer
   x = 277,590.81