Finding the Third Proportional to 89,762 and 139,383

Step by Step Solution

1. Step 1: Write the proportion equation
   89,762 : 139,383 = 139,383 : x
2. Step 2: Convert to fraction form
   89,762/139,383 = 139,383/x
3. Step 3: Cross multiply
   89,762x = 139,383 × 139,383
4. Step 4: Simplify right side
   89,762x = 19,427,620,689
5. Step 5: Solve for x
   x = 19,427,620,689/89,762
6. Step 6: Final answer
   x = 216,434.80