Finding the Third Proportional to 287,724 and 632,550

Step by Step Solution

1. Step 1: Write the proportion equation
   287,724 : 632,550 = 632,550 : x
2. Step 2: Convert to fraction form
   287,724/632,550 = 632,550/x
3. Step 3: Cross multiply
   287,724x = 632,550 × 632,550
4. Step 4: Simplify right side
   287,724x = 400,119,502,500
5. Step 5: Solve for x
   x = 400,119,502,500/287,724
6. Step 6: Final answer
   x = 1,390,636.52