Finding the Third Proportional to 336,585 and 720,460.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,585 : 720,460.50 = 720,460.50 : x
2. Step 2: Convert to fraction form
   336,585/720,460.50 = 720,460.50/x
3. Step 3: Cross multiply
   336,585x = 720,460.50 × 720,460.50
4. Step 4: Simplify right side
   336,585x = 519,063,332,060.25
5. Step 5: Solve for x
   x = 519,063,332,060.25/336,585
6. Step 6: Final answer
   x = 1,542,146.36