Finding the Third Proportional to 118,867 and 243,200

Step by Step Solution

1. Step 1: Write the proportion equation
   118,867 : 243,200 = 243,200 : x
2. Step 2: Convert to fraction form
   118,867/243,200 = 243,200/x
3. Step 3: Cross multiply
   118,867x = 243,200 × 243,200
4. Step 4: Simplify right side
   118,867x = 59,146,240,000
5. Step 5: Solve for x
   x = 59,146,240,000/118,867
6. Step 6: Final answer
   x = 497,583.35