Finding the Third Proportional to 155,401.50 and 243,855

Step by Step Solution

1. Step 1: Write the proportion equation
   155,401.50 : 243,855 = 243,855 : x
2. Step 2: Convert to fraction form
   155,401.50/243,855 = 243,855/x
3. Step 3: Cross multiply
   155,401.50x = 243,855 × 243,855
4. Step 4: Simplify right side
   155,401.50x = 59,465,261,025
5. Step 5: Solve for x
   x = 59,465,261,025/155,401.50
6. Step 6: Final answer
   x = 382,655.64