Finding the Third Proportional to 85,870 and 126,320

Step by Step Solution

1. Step 1: Write the proportion equation
   85,870 : 126,320 = 126,320 : x
2. Step 2: Convert to fraction form
   85,870/126,320 = 126,320/x
3. Step 3: Cross multiply
   85,870x = 126,320 × 126,320
4. Step 4: Simplify right side
   85,870x = 15,956,742,400
5. Step 5: Solve for x
   x = 15,956,742,400/85,870
6. Step 6: Final answer
   x = 185,824.41