Finding the Third Proportional to 60,091.50 and 139,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,091.50 : 139,108.50 = 139,108.50 : x
2. Step 2: Convert to fraction form
   60,091.50/139,108.50 = 139,108.50/x
3. Step 3: Cross multiply
   60,091.50x = 139,108.50 × 139,108.50
4. Step 4: Simplify right side
   60,091.50x = 19,351,174,772.25
5. Step 5: Solve for x
   x = 19,351,174,772.25/60,091.50
6. Step 6: Final answer
   x = 322,028.49