Finding the Third Proportional to 153,938 and 245,910

Step by Step Solution

1. Step 1: Write the proportion equation
   153,938 : 245,910 = 245,910 : x
2. Step 2: Convert to fraction form
   153,938/245,910 = 245,910/x
3. Step 3: Cross multiply
   153,938x = 245,910 × 245,910
4. Step 4: Simplify right side
   153,938x = 60,471,728,100
5. Step 5: Solve for x
   x = 60,471,728,100/153,938
6. Step 6: Final answer
   x = 392,831.71