Finding the Third Proportional to 89,942 and 129,940

Step by Step Solution

1. Step 1: Write the proportion equation
   89,942 : 129,940 = 129,940 : x
2. Step 2: Convert to fraction form
   89,942/129,940 = 129,940/x
3. Step 3: Cross multiply
   89,942x = 129,940 × 129,940
4. Step 4: Simplify right side
   89,942x = 16,884,403,600
5. Step 5: Solve for x
   x = 16,884,403,600/89,942
6. Step 6: Final answer
   x = 187,725.46