Finding the Third Proportional to 155,520 and 418,942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,520 : 418,942.50 = 418,942.50 : x
2. Step 2: Convert to fraction form
   155,520/418,942.50 = 418,942.50/x
3. Step 3: Cross multiply
   155,520x = 418,942.50 × 418,942.50
4. Step 4: Simplify right side
   155,520x = 175,512,818,306.25
5. Step 5: Solve for x
   x = 175,512,818,306.25/155,520
6. Step 6: Final answer
   x = 1,128,554.64