Finding the Third Proportional to 31,128 and 45,360

Step by Step Solution

1. Step 1: Write the proportion equation
   31,128 : 45,360 = 45,360 : x
2. Step 2: Convert to fraction form
   31,128/45,360 = 45,360/x
3. Step 3: Cross multiply
   31,128x = 45,360 × 45,360
4. Step 4: Simplify right side
   31,128x = 2,057,529,600
5. Step 5: Solve for x
   x = 2,057,529,600/31,128
6. Step 6: Final answer
   x = 66,099.00