Finding the Third Proportional to 103,662 and 215,112

Step by Step Solution

1. Step 1: Write the proportion equation
   103,662 : 215,112 = 215,112 : x
2. Step 2: Convert to fraction form
   103,662/215,112 = 215,112/x
3. Step 3: Cross multiply
   103,662x = 215,112 × 215,112
4. Step 4: Simplify right side
   103,662x = 46,273,172,544
5. Step 5: Solve for x
   x = 46,273,172,544/103,662
6. Step 6: Final answer
   x = 446,385.10