Finding the Third Proportional to 1,058.91 and 2,191.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.91 : 2,191.22 = 2,191.22 : x
2. Step 2: Convert to fraction form
   1,058.91/2,191.22 = 2,191.22/x
3. Step 3: Cross multiply
   1,058.91x = 2,191.22 × 2,191.22
4. Step 4: Simplify right side
   1,058.91x = 4,801,439.61
5. Step 5: Solve for x
   x = 4,801,439.61/1,058.91
6. Step 6: Final answer
   x = 4,534.34