Finding the Third Proportional to 336,586.50 and 720,465

Step by Step Solution

1. Step 1: Write the proportion equation
   336,586.50 : 720,465 = 720,465 : x
2. Step 2: Convert to fraction form
   336,586.50/720,465 = 720,465/x
3. Step 3: Cross multiply
   336,586.50x = 720,465 × 720,465
4. Step 4: Simplify right side
   336,586.50x = 519,069,816,225
5. Step 5: Solve for x
   x = 519,069,816,225/336,586.50
6. Step 6: Final answer
   x = 1,542,158.75