Finding the Third Proportional to 127,764 and 271,890

Step by Step Solution

1. Step 1: Write the proportion equation
   127,764 : 271,890 = 271,890 : x
2. Step 2: Convert to fraction form
   127,764/271,890 = 271,890/x
3. Step 3: Cross multiply
   127,764x = 271,890 × 271,890
4. Step 4: Simplify right side
   127,764x = 73,924,172,100
5. Step 5: Solve for x
   x = 73,924,172,100/127,764
6. Step 6: Final answer
   x = 578,599.39