Finding the Third Proportional to 114,810 and 243,278

Step by Step Solution

1. Step 1: Write the proportion equation
   114,810 : 243,278 = 243,278 : x
2. Step 2: Convert to fraction form
   114,810/243,278 = 243,278/x
3. Step 3: Cross multiply
   114,810x = 243,278 × 243,278
4. Step 4: Simplify right side
   114,810x = 59,184,185,284
5. Step 5: Solve for x
   x = 59,184,185,284/114,810
6. Step 6: Final answer
   x = 515,496.78