Finding the Third Proportional to 114,816 and 243,290

Step by Step Solution

1. Step 1: Write the proportion equation
   114,816 : 243,290 = 243,290 : x
2. Step 2: Convert to fraction form
   114,816/243,290 = 243,290/x
3. Step 3: Cross multiply
   114,816x = 243,290 × 243,290
4. Step 4: Simplify right side
   114,816x = 59,190,024,100
5. Step 5: Solve for x
   x = 59,190,024,100/114,816
6. Step 6: Final answer
   x = 515,520.69