Finding the Third Proportional to 79,422.50 and 174,640

Step by Step Solution

1. Step 1: Write the proportion equation
   79,422.50 : 174,640 = 174,640 : x
2. Step 2: Convert to fraction form
   79,422.50/174,640 = 174,640/x
3. Step 3: Cross multiply
   79,422.50x = 174,640 × 174,640
4. Step 4: Simplify right side
   79,422.50x = 30,499,129,600
5. Step 5: Solve for x
   x = 30,499,129,600/79,422.50
6. Step 6: Final answer
   x = 384,011.20