Finding the Third Proportional to 31,375.13 and 67,880.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,375.13 : 67,880.25 = 67,880.25 : x
2. Step 2: Convert to fraction form
   31,375.13/67,880.25 = 67,880.25/x
3. Step 3: Cross multiply
   31,375.13x = 67,880.25 × 67,880.25
4. Step 4: Simplify right side
   31,375.13x = 4,607,728,340.06
5. Step 5: Solve for x
   x = 4,607,728,340.06/31,375.13
6. Step 6: Final answer
   x = 146,859.28