Finding the Third Proportional to 20,881.25 and 43,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,881.25 : 43,490.50 = 43,490.50 : x
2. Step 2: Convert to fraction form
   20,881.25/43,490.50 = 43,490.50/x
3. Step 3: Cross multiply
   20,881.25x = 43,490.50 × 43,490.50
4. Step 4: Simplify right side
   20,881.25x = 1,891,423,590.25
5. Step 5: Solve for x
   x = 1,891,423,590.25/20,881.25
6. Step 6: Final answer
   x = 90,580.00