Finding the Third Proportional to 113,518.50 and 243,336

Step by Step Solution

1. Step 1: Write the proportion equation
   113,518.50 : 243,336 = 243,336 : x
2. Step 2: Convert to fraction form
   113,518.50/243,336 = 243,336/x
3. Step 3: Cross multiply
   113,518.50x = 243,336 × 243,336
4. Step 4: Simplify right side
   113,518.50x = 59,212,408,896
5. Step 5: Solve for x
   x = 59,212,408,896/113,518.50
6. Step 6: Final answer
   x = 521,610.21