Finding the Third Proportional to 915.89 and 1,343.25

Step by Step Solution

1. Step 1: Write the proportion equation
   915.89 : 1,343.25 = 1,343.25 : x
2. Step 2: Convert to fraction form
   915.89/1,343.25 = 1,343.25/x
3. Step 3: Cross multiply
   915.89x = 1,343.25 × 1,343.25
4. Step 4: Simplify right side
   915.89x = 1,804,320.56
5. Step 5: Solve for x
   x = 1,804,320.56/915.89
6. Step 6: Final answer
   x = 1,970.02