Finding the Third Proportional to 227,316 and 356,590

Step by Step Solution

1. Step 1: Write the proportion equation
   227,316 : 356,590 = 356,590 : x
2. Step 2: Convert to fraction form
   227,316/356,590 = 356,590/x
3. Step 3: Cross multiply
   227,316x = 356,590 × 356,590
4. Step 4: Simplify right side
   227,316x = 127,156,428,100
5. Step 5: Solve for x
   x = 127,156,428,100/227,316
6. Step 6: Final answer
   x = 559,381.78