Finding the Third Proportional to 285,232 and 443,624

Step by Step Solution

1. Step 1: Write the proportion equation
   285,232 : 443,624 = 443,624 : x
2. Step 2: Convert to fraction form
   285,232/443,624 = 443,624/x
3. Step 3: Cross multiply
   285,232x = 443,624 × 443,624
4. Step 4: Simplify right side
   285,232x = 196,802,253,376
5. Step 5: Solve for x
   x = 196,802,253,376/285,232
6. Step 6: Final answer
   x = 689,972.56