Finding the Third Proportional to 155,527.50 and 320,868

Step by Step Solution

1. Step 1: Write the proportion equation
   155,527.50 : 320,868 = 320,868 : x
2. Step 2: Convert to fraction form
   155,527.50/320,868 = 320,868/x
3. Step 3: Cross multiply
   155,527.50x = 320,868 × 320,868
4. Step 4: Simplify right side
   155,527.50x = 102,956,273,424
5. Step 5: Solve for x
   x = 102,956,273,424/155,527.50
6. Step 6: Final answer
   x = 661,981.15