Finding the Third Proportional to 20,499.19 and 31,624.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.19 : 31,624.38 = 31,624.38 : x
2. Step 2: Convert to fraction form
   20,499.19/31,624.38 = 31,624.38/x
3. Step 3: Cross multiply
   20,499.19x = 31,624.38 × 31,624.38
4. Step 4: Simplify right side
   20,499.19x = 1,000,101,588.27
5. Step 5: Solve for x
   x = 1,000,101,588.27/20,499.19
6. Step 6: Final answer
   x = 48,787.38