Finding the Third Proportional to 117,666 and 254,988

Step by Step Solution

1. Step 1: Write the proportion equation
   117,666 : 254,988 = 254,988 : x
2. Step 2: Convert to fraction form
   117,666/254,988 = 254,988/x
3. Step 3: Cross multiply
   117,666x = 254,988 × 254,988
4. Step 4: Simplify right side
   117,666x = 65,018,880,144
5. Step 5: Solve for x
   x = 65,018,880,144/117,666
6. Step 6: Final answer
   x = 552,571.52