Finding the Third Proportional to 1,061.95 and 1,640.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.95 : 1,640.30 = 1,640.30 : x
2. Step 2: Convert to fraction form
   1,061.95/1,640.30 = 1,640.30/x
3. Step 3: Cross multiply
   1,061.95x = 1,640.30 × 1,640.30
4. Step 4: Simplify right side
   1,061.95x = 2,690,573.84
5. Step 5: Solve for x
   x = 2,690,573.84/1,061.95
6. Step 6: Final answer
   x = 2,533.61