Finding the Third Proportional to 153,931 and 245,900

Step by Step Solution

1. Step 1: Write the proportion equation
   153,931 : 245,900 = 245,900 : x
2. Step 2: Convert to fraction form
   153,931/245,900 = 245,900/x
3. Step 3: Cross multiply
   153,931x = 245,900 × 245,900
4. Step 4: Simplify right side
   153,931x = 60,466,810,000
5. Step 5: Solve for x
   x = 60,466,810,000/153,931
6. Step 6: Final answer
   x = 392,817.63