Finding the Third Proportional to 155,412 and 338,931

Step by Step Solution

1. Step 1: Write the proportion equation
   155,412 : 338,931 = 338,931 : x
2. Step 2: Convert to fraction form
   155,412/338,931 = 338,931/x
3. Step 3: Cross multiply
   155,412x = 338,931 × 338,931
4. Step 4: Simplify right side
   155,412x = 114,874,222,761
5. Step 5: Solve for x
   x = 114,874,222,761/155,412
6. Step 6: Final answer
   x = 739,159.28