Finding the Third Proportional to 80,188.50 and 128,848.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,188.50 : 128,848.50 = 128,848.50 : x
2. Step 2: Convert to fraction form
   80,188.50/128,848.50 = 128,848.50/x
3. Step 3: Cross multiply
   80,188.50x = 128,848.50 × 128,848.50
4. Step 4: Simplify right side
   80,188.50x = 16,601,935,952.25
5. Step 5: Solve for x
   x = 16,601,935,952.25/80,188.50
6. Step 6: Final answer
   x = 207,036.37