Finding the Third Proportional to 215,040 and 341,630

Step by Step Solution

1. Step 1: Write the proportion equation
   215,040 : 341,630 = 341,630 : x
2. Step 2: Convert to fraction form
   215,040/341,630 = 341,630/x
3. Step 3: Cross multiply
   215,040x = 341,630 × 341,630
4. Step 4: Simplify right side
   215,040x = 116,711,056,900
5. Step 5: Solve for x
   x = 116,711,056,900/215,040
6. Step 6: Final answer
   x = 542,741.15