Finding the Third Proportional to 200,354 and 423,064

Step by Step Solution

1. Step 1: Write the proportion equation
   200,354 : 423,064 = 423,064 : x
2. Step 2: Convert to fraction form
   200,354/423,064 = 423,064/x
3. Step 3: Cross multiply
   200,354x = 423,064 × 423,064
4. Step 4: Simplify right side
   200,354x = 178,983,148,096
5. Step 5: Solve for x
   x = 178,983,148,096/200,354
6. Step 6: Final answer
   x = 893,334.54