Finding the Third Proportional to 3,156.19 and 3,493.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,156.19 : 3,493.69 = 3,493.69 : x
2. Step 2: Convert to fraction form
   3,156.19/3,493.69 = 3,493.69/x
3. Step 3: Cross multiply
   3,156.19x = 3,493.69 × 3,493.69
4. Step 4: Simplify right side
   3,156.19x = 12,205,852.35
5. Step 5: Solve for x
   x = 12,205,852.35/3,156.19
6. Step 6: Final answer
   x = 3,867.28