Finding the Third Proportional to 100,900.69 and 214,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   100,900.69 : 214,100.72 = 214,100.72 : x
2. Step 2: Convert to fraction form
   100,900.69/214,100.72 = 214,100.72/x
3. Step 3: Cross multiply
   100,900.69x = 214,100.72 × 214,100.72
4. Step 4: Simplify right side
   100,900.69x = 45,839,117,769.27
5. Step 5: Solve for x
   x = 45,839,117,769.27/100,900.69
6. Step 6: Final answer
   x = 454,299.36