Finding the Third Proportional to 328,087.50 and 506,124

Step by Step Solution

1. Step 1: Write the proportion equation
   328,087.50 : 506,124 = 506,124 : x
2. Step 2: Convert to fraction form
   328,087.50/506,124 = 506,124/x
3. Step 3: Cross multiply
   328,087.50x = 506,124 × 506,124
4. Step 4: Simplify right side
   328,087.50x = 256,161,503,376
5. Step 5: Solve for x
   x = 256,161,503,376/328,087.50
6. Step 6: Final answer
   x = 780,771.91