Finding the Third Proportional to 55,189.50 and 85,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,189.50 : 85,435.50 = 85,435.50 : x
2. Step 2: Convert to fraction form
   55,189.50/85,435.50 = 85,435.50/x
3. Step 3: Cross multiply
   55,189.50x = 85,435.50 × 85,435.50
4. Step 4: Simplify right side
   55,189.50x = 7,299,224,660.25
5. Step 5: Solve for x
   x = 7,299,224,660.25/55,189.50
6. Step 6: Final answer
   x = 132,257.49