Finding the Third Proportional to 31,210.75 and 45,648

Step by Step Solution

1. Step 1: Write the proportion equation
   31,210.75 : 45,648 = 45,648 : x
2. Step 2: Convert to fraction form
   31,210.75/45,648 = 45,648/x
3. Step 3: Cross multiply
   31,210.75x = 45,648 × 45,648
4. Step 4: Simplify right side
   31,210.75x = 2,083,739,904
5. Step 5: Solve for x
   x = 2,083,739,904/31,210.75
6. Step 6: Final answer
   x = 66,763.53