Finding the Third Proportional to 153,900 and 245,862

Step by Step Solution

1. Step 1: Write the proportion equation
   153,900 : 245,862 = 245,862 : x
2. Step 2: Convert to fraction form
   153,900/245,862 = 245,862/x
3. Step 3: Cross multiply
   153,900x = 245,862 × 245,862
4. Step 4: Simplify right side
   153,900x = 60,448,123,044
5. Step 5: Solve for x
   x = 60,448,123,044/153,900
6. Step 6: Final answer
   x = 392,775.33