Finding the Third Proportional to 189,310.50 and 412,884

Step by Step Solution

1. Step 1: Write the proportion equation
   189,310.50 : 412,884 = 412,884 : x
2. Step 2: Convert to fraction form
   189,310.50/412,884 = 412,884/x
3. Step 3: Cross multiply
   189,310.50x = 412,884 × 412,884
4. Step 4: Simplify right side
   189,310.50x = 170,473,197,456
5. Step 5: Solve for x
   x = 170,473,197,456/189,310.50
6. Step 6: Final answer
   x = 900,495.20