Finding the Third Proportional to 287,463 and 604,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   287,463 : 604,715.25 = 604,715.25 : x
2. Step 2: Convert to fraction form
   287,463/604,715.25 = 604,715.25/x
3. Step 3: Cross multiply
   287,463x = 604,715.25 × 604,715.25
4. Step 4: Simplify right side
   287,463x = 365,680,533,582.56
5. Step 5: Solve for x
   x = 365,680,533,582.56/287,463
6. Step 6: Final answer
   x = 1,272,096.00