Finding the Third Proportional to 215,827 and 341,499

Step by Step Solution

1. Step 1: Write the proportion equation
   215,827 : 341,499 = 341,499 : x
2. Step 2: Convert to fraction form
   215,827/341,499 = 341,499/x
3. Step 3: Cross multiply
   215,827x = 341,499 × 341,499
4. Step 4: Simplify right side
   215,827x = 116,621,567,001
5. Step 5: Solve for x
   x = 116,621,567,001/215,827
6. Step 6: Final answer
   x = 540,347.44