Finding the Third Proportional to 13,423 and 31,208

Step by Step Solution

1. Step 1: Write the proportion equation
   13,423 : 31,208 = 31,208 : x
2. Step 2: Convert to fraction form
   13,423/31,208 = 31,208/x
3. Step 3: Cross multiply
   13,423x = 31,208 × 31,208
4. Step 4: Simplify right side
   13,423x = 973,939,264
5. Step 5: Solve for x
   x = 973,939,264/13,423
6. Step 6: Final answer
   x = 72,557.50