Finding the Third Proportional to 31,502 and 45,390

Step by Step Solution

1. Step 1: Write the proportion equation
   31,502 : 45,390 = 45,390 : x
2. Step 2: Convert to fraction form
   31,502/45,390 = 45,390/x
3. Step 3: Cross multiply
   31,502x = 45,390 × 45,390
4. Step 4: Simplify right side
   31,502x = 2,060,252,100
5. Step 5: Solve for x
   x = 2,060,252,100/31,502
6. Step 6: Final answer
   x = 65,400.68