Finding the Third Proportional to 139,171.50 and 303,615

Step by Step Solution

1. Step 1: Write the proportion equation
   139,171.50 : 303,615 = 303,615 : x
2. Step 2: Convert to fraction form
   139,171.50/303,615 = 303,615/x
3. Step 3: Cross multiply
   139,171.50x = 303,615 × 303,615
4. Step 4: Simplify right side
   139,171.50x = 92,182,068,225
5. Step 5: Solve for x
   x = 92,182,068,225/139,171.50
6. Step 6: Final answer
   x = 662,363.11