Finding the Third Proportional to 80,290.13 and 123,459.75

Step by Step Solution

1. Step 1: Write the proportion equation
   80,290.13 : 123,459.75 = 123,459.75 : x
2. Step 2: Convert to fraction form
   80,290.13/123,459.75 = 123,459.75/x
3. Step 3: Cross multiply
   80,290.13x = 123,459.75 × 123,459.75
4. Step 4: Simplify right side
   80,290.13x = 15,242,309,870.06
5. Step 5: Solve for x
   x = 15,242,309,870.06/80,290.13
6. Step 6: Final answer
   x = 189,840.41