Finding the Third Proportional to 189,287 and 416,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,287 : 416,981.50 = 416,981.50 : x
2. Step 2: Convert to fraction form
   189,287/416,981.50 = 416,981.50/x
3. Step 3: Cross multiply
   189,287x = 416,981.50 × 416,981.50
4. Step 4: Simplify right side
   189,287x = 173,873,571,342.25
5. Step 5: Solve for x
   x = 173,873,571,342.25/189,287
6. Step 6: Final answer
   x = 918,571.12