Finding the Third Proportional to 1,890.56 and 2,920.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.56 : 2,920.88 = 2,920.88 : x
2. Step 2: Convert to fraction form
   1,890.56/2,920.88 = 2,920.88/x
3. Step 3: Cross multiply
   1,890.56x = 2,920.88 × 2,920.88
4. Step 4: Simplify right side
   1,890.56x = 8,531,510.77
5. Step 5: Solve for x
   x = 8,531,510.77/1,890.56
6. Step 6: Final answer
   x = 4,512.68