Finding the Third Proportional to 126,115.50 and 210,192

Step by Step Solution

1. Step 1: Write the proportion equation
   126,115.50 : 210,192 = 210,192 : x
2. Step 2: Convert to fraction form
   126,115.50/210,192 = 210,192/x
3. Step 3: Cross multiply
   126,115.50x = 210,192 × 210,192
4. Step 4: Simplify right side
   126,115.50x = 44,180,676,864
5. Step 5: Solve for x
   x = 44,180,676,864/126,115.50
6. Step 6: Final answer
   x = 350,319.17