Finding the Third Proportional to 12,742.31 and 26,646.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.31 : 26,646.47 = 26,646.47 : x
2. Step 2: Convert to fraction form
   12,742.31/26,646.47 = 26,646.47/x
3. Step 3: Cross multiply
   12,742.31x = 26,646.47 × 26,646.47
4. Step 4: Simplify right side
   12,742.31x = 710,034,296.84
5. Step 5: Solve for x
   x = 710,034,296.84/12,742.31
6. Step 6: Final answer
   x = 55,722.56