Finding the Third Proportional to 14,387.63 and 31,390.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,387.63 : 31,390.31 = 31,390.31 : x
2. Step 2: Convert to fraction form
   14,387.63/31,390.31 = 31,390.31/x
3. Step 3: Cross multiply
   14,387.63x = 31,390.31 × 31,390.31
4. Step 4: Simplify right side
   14,387.63x = 985,351,718.85
5. Step 5: Solve for x
   x = 985,351,718.85/14,387.63
6. Step 6: Final answer
   x = 68,486.06