Finding the Third Proportional to 155,434.50 and 240,021

Step by Step Solution

1. Step 1: Write the proportion equation
   155,434.50 : 240,021 = 240,021 : x
2. Step 2: Convert to fraction form
   155,434.50/240,021 = 240,021/x
3. Step 3: Cross multiply
   155,434.50x = 240,021 × 240,021
4. Step 4: Simplify right side
   155,434.50x = 57,610,080,441
5. Step 5: Solve for x
   x = 57,610,080,441/155,434.50
6. Step 6: Final answer
   x = 370,638.95