Finding the Third Proportional to 204,485.50 and 312,264

Step by Step Solution

1. Step 1: Write the proportion equation
   204,485.50 : 312,264 = 312,264 : x
2. Step 2: Convert to fraction form
   204,485.50/312,264 = 312,264/x
3. Step 3: Cross multiply
   204,485.50x = 312,264 × 312,264
4. Step 4: Simplify right side
   204,485.50x = 97,508,805,696
5. Step 5: Solve for x
   x = 97,508,805,696/204,485.50
6. Step 6: Final answer
   x = 476,849.49