Finding the Third Proportional to 103,018.50 and 217,107

Step by Step Solution

1. Step 1: Write the proportion equation
   103,018.50 : 217,107 = 217,107 : x
2. Step 2: Convert to fraction form
   103,018.50/217,107 = 217,107/x
3. Step 3: Cross multiply
   103,018.50x = 217,107 × 217,107
4. Step 4: Simplify right side
   103,018.50x = 47,135,449,449
5. Step 5: Solve for x
   x = 47,135,449,449/103,018.50
6. Step 6: Final answer
   x = 457,543.54