Finding the Third Proportional to 190,629 and 254,142

Step by Step Solution

1. Step 1: Write the proportion equation
   190,629 : 254,142 = 254,142 : x
2. Step 2: Convert to fraction form
   190,629/254,142 = 254,142/x
3. Step 3: Cross multiply
   190,629x = 254,142 × 254,142
4. Step 4: Simplify right side
   190,629x = 64,588,156,164
5. Step 5: Solve for x
   x = 64,588,156,164/190,629
6. Step 6: Final answer
   x = 338,816.00