Finding the Third Proportional to 60,059.25 and 139,021.88

Step by Step Solution

1. Step 1: Write the proportion equation
   60,059.25 : 139,021.88 = 139,021.88 : x
2. Step 2: Convert to fraction form
   60,059.25/139,021.88 = 139,021.88/x
3. Step 3: Cross multiply
   60,059.25x = 139,021.88 × 139,021.88
4. Step 4: Simplify right side
   60,059.25x = 19,327,081,728.52
5. Step 5: Solve for x
   x = 19,327,081,728.52/60,059.25
6. Step 6: Final answer
   x = 321,800.25