Finding the Third Proportional to 20,184.19 and 42,623.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,184.19 : 42,623.72 = 42,623.72 : x
2. Step 2: Convert to fraction form
   20,184.19/42,623.72 = 42,623.72/x
3. Step 3: Cross multiply
   20,184.19x = 42,623.72 × 42,623.72
4. Step 4: Simplify right side
   20,184.19x = 1,816,781,400.08
5. Step 5: Solve for x
   x = 1,816,781,400.08/20,184.19
6. Step 6: Final answer
   x = 90,010.13