Finding the Third Proportional to 188,172 and 288,254

Step by Step Solution

1. Step 1: Write the proportion equation
   188,172 : 288,254 = 288,254 : x
2. Step 2: Convert to fraction form
   188,172/288,254 = 288,254/x
3. Step 3: Cross multiply
   188,172x = 288,254 × 288,254
4. Step 4: Simplify right side
   188,172x = 83,090,368,516
5. Step 5: Solve for x
   x = 83,090,368,516/188,172
6. Step 6: Final answer
   x = 441,566.06