Finding the Third Proportional to 13,888 and 31,712

Step by Step Solution

1. Step 1: Write the proportion equation
   13,888 : 31,712 = 31,712 : x
2. Step 2: Convert to fraction form
   13,888/31,712 = 31,712/x
3. Step 3: Cross multiply
   13,888x = 31,712 × 31,712
4. Step 4: Simplify right side
   13,888x = 1,005,650,944
5. Step 5: Solve for x
   x = 1,005,650,944/13,888
6. Step 6: Final answer
   x = 72,411.50