Finding the Third Proportional to 13,972.50 and 31,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,972.50 : 31,360.50 = 31,360.50 : x
2. Step 2: Convert to fraction form
   13,972.50/31,360.50 = 31,360.50/x
3. Step 3: Cross multiply
   13,972.50x = 31,360.50 × 31,360.50
4. Step 4: Simplify right side
   13,972.50x = 983,480,960.25
5. Step 5: Solve for x
   x = 983,480,960.25/13,972.50
6. Step 6: Final answer
   x = 70,386.90