Finding the Third Proportional to 287,462.50 and 604,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,462.50 : 604,715.50 = 604,715.50 : x
2. Step 2: Convert to fraction form
   287,462.50/604,715.50 = 604,715.50/x
3. Step 3: Cross multiply
   287,462.50x = 604,715.50 × 604,715.50
4. Step 4: Simplify right side
   287,462.50x = 365,680,835,940.25
5. Step 5: Solve for x
   x = 365,680,835,940.25/287,462.50
6. Step 6: Final answer
   x = 1,272,099.27