Finding the Third Proportional to 86,470.50 and 189,343.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,470.50 : 189,343.50 = 189,343.50 : x
2. Step 2: Convert to fraction form
   86,470.50/189,343.50 = 189,343.50/x
3. Step 3: Cross multiply
   86,470.50x = 189,343.50 × 189,343.50
4. Step 4: Simplify right side
   86,470.50x = 35,850,960,992.25
5. Step 5: Solve for x
   x = 35,850,960,992.25/86,470.50
6. Step 6: Final answer
   x = 414,603.37