Finding the Third Proportional to 83,977 and 128,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,977 : 128,857.50 = 128,857.50 : x
2. Step 2: Convert to fraction form
   83,977/128,857.50 = 128,857.50/x
3. Step 3: Cross multiply
   83,977x = 128,857.50 × 128,857.50
4. Step 4: Simplify right side
   83,977x = 16,604,255,306.25
5. Step 5: Solve for x
   x = 16,604,255,306.25/83,977
6. Step 6: Final answer
   x = 197,723.84