Finding the Third Proportional to 697.06 and 1,439.69

Step by Step Solution

1. Step 1: Write the proportion equation
   697.06 : 1,439.69 = 1,439.69 : x
2. Step 2: Convert to fraction form
   697.06/1,439.69 = 1,439.69/x
3. Step 3: Cross multiply
   697.06x = 1,439.69 × 1,439.69
4. Step 4: Simplify right side
   697.06x = 2,072,700.10
5. Step 5: Solve for x
   x = 2,072,700.10/697.06
6. Step 6: Final answer
   x = 2,973.48