Finding the Third Proportional to 1,060.91 and 1,386.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.91 : 1,386.18 = 1,386.18 : x
2. Step 2: Convert to fraction form
   1,060.91/1,386.18 = 1,386.18/x
3. Step 3: Cross multiply
   1,060.91x = 1,386.18 × 1,386.18
4. Step 4: Simplify right side
   1,060.91x = 1,921,483.30
5. Step 5: Solve for x
   x = 1,921,483.30/1,060.91
6. Step 6: Final answer
   x = 1,811.16