Finding the Third Proportional to 139,180.50 and 298,035

Step by Step Solution

1. Step 1: Write the proportion equation
   139,180.50 : 298,035 = 298,035 : x
2. Step 2: Convert to fraction form
   139,180.50/298,035 = 298,035/x
3. Step 3: Cross multiply
   139,180.50x = 298,035 × 298,035
4. Step 4: Simplify right side
   139,180.50x = 88,824,861,225
5. Step 5: Solve for x
   x = 88,824,861,225/139,180.50
6. Step 6: Final answer
   x = 638,199.04