Finding the Third Proportional to 113,218.50 and 242,295

Step by Step Solution

1. Step 1: Write the proportion equation
   113,218.50 : 242,295 = 242,295 : x
2. Step 2: Convert to fraction form
   113,218.50/242,295 = 242,295/x
3. Step 3: Cross multiply
   113,218.50x = 242,295 × 242,295
4. Step 4: Simplify right side
   113,218.50x = 58,706,867,025
5. Step 5: Solve for x
   x = 58,706,867,025/113,218.50
6. Step 6: Final answer
   x = 518,527.16