Finding the Third Proportional to 1,336.31 and 3,156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.31 : 3,156.56 = 3,156.56 : x
2. Step 2: Convert to fraction form
   1,336.31/3,156.56 = 3,156.56/x
3. Step 3: Cross multiply
   1,336.31x = 3,156.56 × 3,156.56
4. Step 4: Simplify right side
   1,336.31x = 9,963,886.82
5. Step 5: Solve for x
   x = 9,963,886.82/1,336.31
6. Step 6: Final answer
   x = 7,456.26