Finding the Third Proportional to 1,239.98 and 2,669.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239.98 : 2,669.77 = 2,669.77 : x
2. Step 2: Convert to fraction form
   1,239.98/2,669.77 = 2,669.77/x
3. Step 3: Cross multiply
   1,239.98x = 2,669.77 × 2,669.77
4. Step 4: Simplify right side
   1,239.98x = 7,127,654.36
5. Step 5: Solve for x
   x = 7,127,654.36/1,239.98
6. Step 6: Final answer
   x = 5,748.22