Finding the Third Proportional to 155,426 and 338,948

Step by Step Solution

1. Step 1: Write the proportion equation
   155,426 : 338,948 = 338,948 : x
2. Step 2: Convert to fraction form
   155,426/338,948 = 338,948/x
3. Step 3: Cross multiply
   155,426x = 338,948 × 338,948
4. Step 4: Simplify right side
   155,426x = 114,885,746,704
5. Step 5: Solve for x
   x = 114,885,746,704/155,426
6. Step 6: Final answer
   x = 739,166.85