Finding the Third Proportional to 84,250.50 and 128,105.25

Step by Step Solution

1. Step 1: Write the proportion equation
   84,250.50 : 128,105.25 = 128,105.25 : x
2. Step 2: Convert to fraction form
   84,250.50/128,105.25 = 128,105.25/x
3. Step 3: Cross multiply
   84,250.50x = 128,105.25 × 128,105.25
4. Step 4: Simplify right side
   84,250.50x = 16,410,955,077.56
5. Step 5: Solve for x
   x = 16,410,955,077.56/84,250.50
6. Step 6: Final answer
   x = 194,787.63