Finding the Third Proportional to 104,316 and 213,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   104,316 : 213,589.50 = 213,589.50 : x
2. Step 2: Convert to fraction form
   104,316/213,589.50 = 213,589.50/x
3. Step 3: Cross multiply
   104,316x = 213,589.50 × 213,589.50
4. Step 4: Simplify right side
   104,316x = 45,620,474,510.25
5. Step 5: Solve for x
   x = 45,620,474,510.25/104,316
6. Step 6: Final answer
   x = 437,329.60