Finding the Third Proportional to 153,930 and 245,898

Step by Step Solution

1. Step 1: Write the proportion equation
   153,930 : 245,898 = 245,898 : x
2. Step 2: Convert to fraction form
   153,930/245,898 = 245,898/x
3. Step 3: Cross multiply
   153,930x = 245,898 × 245,898
4. Step 4: Simplify right side
   153,930x = 60,465,826,404
5. Step 5: Solve for x
   x = 60,465,826,404/153,930
6. Step 6: Final answer
   x = 392,813.79