Finding the Third Proportional to 75,061.50 and 139,050

Step by Step Solution

1. Step 1: Write the proportion equation
   75,061.50 : 139,050 = 139,050 : x
2. Step 2: Convert to fraction form
   75,061.50/139,050 = 139,050/x
3. Step 3: Cross multiply
   75,061.50x = 139,050 × 139,050
4. Step 4: Simplify right side
   75,061.50x = 19,334,902,500
5. Step 5: Solve for x
   x = 19,334,902,500/75,061.50
6. Step 6: Final answer
   x = 257,587.48