Finding the Third Proportional to 155,956 and 243,042

Step by Step Solution

1. Step 1: Write the proportion equation
   155,956 : 243,042 = 243,042 : x
2. Step 2: Convert to fraction form
   155,956/243,042 = 243,042/x
3. Step 3: Cross multiply
   155,956x = 243,042 × 243,042
4. Step 4: Simplify right side
   155,956x = 59,069,413,764
5. Step 5: Solve for x
   x = 59,069,413,764/155,956
6. Step 6: Final answer
   x = 378,756.92