Finding the Third Proportional to 83,042 and 128,938

Step by Step Solution

1. Step 1: Write the proportion equation
   83,042 : 128,938 = 128,938 : x
2. Step 2: Convert to fraction form
   83,042/128,938 = 128,938/x
3. Step 3: Cross multiply
   83,042x = 128,938 × 128,938
4. Step 4: Simplify right side
   83,042x = 16,625,007,844
5. Step 5: Solve for x
   x = 16,625,007,844/83,042
6. Step 6: Final answer
   x = 200,199.99