Finding the Third Proportional to 64,908 and 150,390

Step by Step Solution

1. Step 1: Write the proportion equation
   64,908 : 150,390 = 150,390 : x
2. Step 2: Convert to fraction form
   64,908/150,390 = 150,390/x
3. Step 3: Cross multiply
   64,908x = 150,390 × 150,390
4. Step 4: Simplify right side
   64,908x = 22,617,152,100
5. Step 5: Solve for x
   x = 22,617,152,100/64,908
6. Step 6: Final answer
   x = 348,449.38