Finding the Third Proportional to 20,702.50 and 42,881

Step by Step Solution

1. Step 1: Write the proportion equation
   20,702.50 : 42,881 = 42,881 : x
2. Step 2: Convert to fraction form
   20,702.50/42,881 = 42,881/x
3. Step 3: Cross multiply
   20,702.50x = 42,881 × 42,881
4. Step 4: Simplify right side
   20,702.50x = 1,838,780,161
5. Step 5: Solve for x
   x = 1,838,780,161/20,702.50
6. Step 6: Final answer
   x = 88,819.23