Finding the Third Proportional to 21,179.25 and 31,156.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,179.25 : 31,156.88 = 31,156.88 : x
2. Step 2: Convert to fraction form
   21,179.25/31,156.88 = 31,156.88/x
3. Step 3: Cross multiply
   21,179.25x = 31,156.88 × 31,156.88
4. Step 4: Simplify right side
   21,179.25x = 970,750,859.77
5. Step 5: Solve for x
   x = 970,750,859.77/21,179.25
6. Step 6: Final answer
   x = 45,835.00