Finding the Third Proportional to 79,423 and 174,640

Step by Step Solution

1. Step 1: Write the proportion equation
   79,423 : 174,640 = 174,640 : x
2. Step 2: Convert to fraction form
   79,423/174,640 = 174,640/x
3. Step 3: Cross multiply
   79,423x = 174,640 × 174,640
4. Step 4: Simplify right side
   79,423x = 30,499,129,600
5. Step 5: Solve for x
   x = 30,499,129,600/79,423
6. Step 6: Final answer
   x = 384,008.78