Finding the Third Proportional to 287,709 and 632,522

Step by Step Solution

1. Step 1: Write the proportion equation
   287,709 : 632,522 = 632,522 : x
2. Step 2: Convert to fraction form
   287,709/632,522 = 632,522/x
3. Step 3: Cross multiply
   287,709x = 632,522 × 632,522
4. Step 4: Simplify right side
   287,709x = 400,084,080,484
5. Step 5: Solve for x
   x = 400,084,080,484/287,709
6. Step 6: Final answer
   x = 1,390,585.91