Finding the Third Proportional to 189,285 and 416,977.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,285 : 416,977.50 = 416,977.50 : x
2. Step 2: Convert to fraction form
   189,285/416,977.50 = 416,977.50/x
3. Step 3: Cross multiply
   189,285x = 416,977.50 × 416,977.50
4. Step 4: Simplify right side
   189,285x = 173,870,235,506.25
5. Step 5: Solve for x
   x = 173,870,235,506.25/189,285
6. Step 6: Final answer
   x = 918,563.20