Finding the Third Proportional to 14,107.50 and 31,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,107.50 : 31,117.50 = 31,117.50 : x
2. Step 2: Convert to fraction form
   14,107.50/31,117.50 = 31,117.50/x
3. Step 3: Cross multiply
   14,107.50x = 31,117.50 × 31,117.50
4. Step 4: Simplify right side
   14,107.50x = 968,298,806.25
5. Step 5: Solve for x
   x = 968,298,806.25/14,107.50
6. Step 6: Final answer
   x = 68,637.17