Finding the Third Proportional to 127,905 and 191,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127,905 : 191,857.50 = 191,857.50 : x
2. Step 2: Convert to fraction form
   127,905/191,857.50 = 191,857.50/x
3. Step 3: Cross multiply
   127,905x = 191,857.50 × 191,857.50
4. Step 4: Simplify right side
   127,905x = 36,809,300,306.25
5. Step 5: Solve for x
   x = 36,809,300,306.25/127,905
6. Step 6: Final answer
   x = 287,786.25