Finding the Third Proportional to 12,318 and 19,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,318 : 19,108.50 = 19,108.50 : x
2. Step 2: Convert to fraction form
   12,318/19,108.50 = 19,108.50/x
3. Step 3: Cross multiply
   12,318x = 19,108.50 × 19,108.50
4. Step 4: Simplify right side
   12,318x = 365,134,772.25
5. Step 5: Solve for x
   x = 365,134,772.25/12,318
6. Step 6: Final answer
   x = 29,642.37