Finding the Third Proportional to 1,211.25 and 1,871.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211.25 : 1,871.63 = 1,871.63 : x
2. Step 2: Convert to fraction form
   1,211.25/1,871.63 = 1,871.63/x
3. Step 3: Cross multiply
   1,211.25x = 1,871.63 × 1,871.63
4. Step 4: Simplify right side
   1,211.25x = 3,502,980.14
5. Step 5: Solve for x
   x = 3,502,980.14/1,211.25
6. Step 6: Final answer
   x = 2,892.04