Finding the Third Proportional to 11,698.50 and 22,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,698.50 : 22,318.50 = 22,318.50 : x
2. Step 2: Convert to fraction form
   11,698.50/22,318.50 = 22,318.50/x
3. Step 3: Cross multiply
   11,698.50x = 22,318.50 × 22,318.50
4. Step 4: Simplify right side
   11,698.50x = 498,115,442.25
5. Step 5: Solve for x
   x = 498,115,442.25/11,698.50
6. Step 6: Final answer
   x = 42,579.43