Finding the Third Proportional to 31,912 and 45,680

Step by Step Solution

1. Step 1: Write the proportion equation
   31,912 : 45,680 = 45,680 : x
2. Step 2: Convert to fraction form
   31,912/45,680 = 45,680/x
3. Step 3: Cross multiply
   31,912x = 45,680 × 45,680
4. Step 4: Simplify right side
   31,912x = 2,086,662,400
5. Step 5: Solve for x
   x = 2,086,662,400/31,912
6. Step 6: Final answer
   x = 65,388.02