Finding the Third Proportional to 1,056.38 and 1,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.38 : 1,438.59 = 1,438.59 : x
2. Step 2: Convert to fraction form
   1,056.38/1,438.59 = 1,438.59/x
3. Step 3: Cross multiply
   1,056.38x = 1,438.59 × 1,438.59
4. Step 4: Simplify right side
   1,056.38x = 2,069,551.98
5. Step 5: Solve for x
   x = 2,069,551.98/1,056.38
6. Step 6: Final answer
   x = 1,959.11