Finding the Third Proportional to 1,350.42 and 1,980.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.42 : 1,980.70 = 1,980.70 : x
2. Step 2: Convert to fraction form
   1,350.42/1,980.70 = 1,980.70/x
3. Step 3: Cross multiply
   1,350.42x = 1,980.70 × 1,980.70
4. Step 4: Simplify right side
   1,350.42x = 3,923,184.87
5. Step 5: Solve for x
   x = 3,923,184.87/1,350.42
6. Step 6: Final answer
   x = 2,905.16