Finding the Third Proportional to 86,422.50 and 133,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,422.50 : 133,321.50 = 133,321.50 : x
2. Step 2: Convert to fraction form
   86,422.50/133,321.50 = 133,321.50/x
3. Step 3: Cross multiply
   86,422.50x = 133,321.50 × 133,321.50
4. Step 4: Simplify right side
   86,422.50x = 17,774,622,362.25
5. Step 5: Solve for x
   x = 17,774,622,362.25/86,422.50
6. Step 6: Final answer
   x = 205,671.24