Finding the Third Proportional to 120,066 and 173,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,066 : 173,899.50 = 173,899.50 : x
2. Step 2: Convert to fraction form
   120,066/173,899.50 = 173,899.50/x
3. Step 3: Cross multiply
   120,066x = 173,899.50 × 173,899.50
4. Step 4: Simplify right side
   120,066x = 30,241,036,100.25
5. Step 5: Solve for x
   x = 30,241,036,100.25/120,066
6. Step 6: Final answer
   x = 251,870.11