Finding the Third Proportional to 100,945.50 and 218,612

Step by Step Solution

1. Step 1: Write the proportion equation
   100,945.50 : 218,612 = 218,612 : x
2. Step 2: Convert to fraction form
   100,945.50/218,612 = 218,612/x
3. Step 3: Cross multiply
   100,945.50x = 218,612 × 218,612
4. Step 4: Simplify right side
   100,945.50x = 47,791,206,544
5. Step 5: Solve for x
   x = 47,791,206,544/100,945.50
6. Step 6: Final answer
   x = 473,435.73