Finding the Third Proportional to 55,449 and 85,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,449 : 85,315.50 = 85,315.50 : x
2. Step 2: Convert to fraction form
   55,449/85,315.50 = 85,315.50/x
3. Step 3: Cross multiply
   55,449x = 85,315.50 × 85,315.50
4. Step 4: Simplify right side
   55,449x = 7,278,734,540.25
5. Step 5: Solve for x
   x = 7,278,734,540.25/55,449
6. Step 6: Final answer
   x = 131,269.00