Finding the Third Proportional to 155,439 and 236,196.75

Step by Step Solution

1. Step 1: Write the proportion equation
   155,439 : 236,196.75 = 236,196.75 : x
2. Step 2: Convert to fraction form
   155,439/236,196.75 = 236,196.75/x
3. Step 3: Cross multiply
   155,439x = 236,196.75 × 236,196.75
4. Step 4: Simplify right side
   155,439x = 55,788,904,710.56
5. Step 5: Solve for x
   x = 55,788,904,710.56/155,439
6. Step 6: Final answer
   x = 358,911.89