Finding the Third Proportional to 20,637 and 42,363

Step by Step Solution

1. Step 1: Write the proportion equation
   20,637 : 42,363 = 42,363 : x
2. Step 2: Convert to fraction form
   20,637/42,363 = 42,363/x
3. Step 3: Cross multiply
   20,637x = 42,363 × 42,363
4. Step 4: Simplify right side
   20,637x = 1,794,623,769
5. Step 5: Solve for x
   x = 1,794,623,769/20,637
6. Step 6: Final answer
   x = 86,961.47