Finding the Third Proportional to 189,286 and 416,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,286 : 416,979.50 = 416,979.50 : x
2. Step 2: Convert to fraction form
   189,286/416,979.50 = 416,979.50/x
3. Step 3: Cross multiply
   189,286x = 416,979.50 × 416,979.50
4. Step 4: Simplify right side
   189,286x = 173,871,903,420.25
5. Step 5: Solve for x
   x = 173,871,903,420.25/189,286
6. Step 6: Final answer
   x = 918,567.16