Finding the Third Proportional to 429,188 and 663,510

Step by Step Solution

1. Step 1: Write the proportion equation
   429,188 : 663,510 = 663,510 : x
2. Step 2: Convert to fraction form
   429,188/663,510 = 663,510/x
3. Step 3: Cross multiply
   429,188x = 663,510 × 663,510
4. Step 4: Simplify right side
   429,188x = 440,245,520,100
5. Step 5: Solve for x
   x = 440,245,520,100/429,188
6. Step 6: Final answer
   x = 1,025,763.81