Finding the Third Proportional to 1,320.84 and 2,218.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.84 : 2,218.32 = 2,218.32 : x
2. Step 2: Convert to fraction form
   1,320.84/2,218.32 = 2,218.32/x
3. Step 3: Cross multiply
   1,320.84x = 2,218.32 × 2,218.32
4. Step 4: Simplify right side
   1,320.84x = 4,920,962.34
5. Step 5: Solve for x
   x = 4,920,962.34/1,320.84
6. Step 6: Final answer
   x = 3,725.64