Finding the Third Proportional to 1,387.69 and 2,237.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387.69 : 2,237.06 = 2,237.06 : x
2. Step 2: Convert to fraction form
   1,387.69/2,237.06 = 2,237.06/x
3. Step 3: Cross multiply
   1,387.69x = 2,237.06 × 2,237.06
4. Step 4: Simplify right side
   1,387.69x = 5,004,448.63
5. Step 5: Solve for x
   x = 5,004,448.63/1,387.69
6. Step 6: Final answer
   x = 3,606.32