Finding the Third Proportional to 1,261.88 and 1,915.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.88 : 1,915.59 = 1,915.59 : x
2. Step 2: Convert to fraction form
   1,261.88/1,915.59 = 1,915.59/x
3. Step 3: Cross multiply
   1,261.88x = 1,915.59 × 1,915.59
4. Step 4: Simplify right side
   1,261.88x = 3,669,499.42
5. Step 5: Solve for x
   x = 3,669,499.42/1,261.88
6. Step 6: Final answer
   x = 2,907.97