Finding the Third Proportional to 18,112 and 38,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,112 : 38,404.50 = 38,404.50 : x
2. Step 2: Convert to fraction form
   18,112/38,404.50 = 38,404.50/x
3. Step 3: Cross multiply
   18,112x = 38,404.50 × 38,404.50
4. Step 4: Simplify right side
   18,112x = 1,474,905,620.25
5. Step 5: Solve for x
   x = 1,474,905,620.25/18,112
6. Step 6: Final answer
   x = 81,432.51