Finding the Third Proportional to 30,636 and 67,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,636 : 67,288.50 = 67,288.50 : x
2. Step 2: Convert to fraction form
   30,636/67,288.50 = 67,288.50/x
3. Step 3: Cross multiply
   30,636x = 67,288.50 × 67,288.50
4. Step 4: Simplify right side
   30,636x = 4,527,742,232.25
5. Step 5: Solve for x
   x = 4,527,742,232.25/30,636
6. Step 6: Final answer
   x = 147,791.56