Finding the Third Proportional to 287,941.50 and 633,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,941.50 : 633,109.50 = 633,109.50 : x
2. Step 2: Convert to fraction form
   287,941.50/633,109.50 = 633,109.50/x
3. Step 3: Cross multiply
   287,941.50x = 633,109.50 × 633,109.50
4. Step 4: Simplify right side
   287,941.50x = 400,827,638,990.25
5. Step 5: Solve for x
   x = 400,827,638,990.25/287,941.50
6. Step 6: Final answer
   x = 1,392,045.39