Finding the Third Proportional to 570,700 and 1,215,128

Step by Step Solution

1. Step 1: Write the proportion equation
   570,700 : 1,215,128 = 1,215,128 : x
2. Step 2: Convert to fraction form
   570,700/1,215,128 = 1,215,128/x
3. Step 3: Cross multiply
   570,700x = 1,215,128 × 1,215,128
4. Step 4: Simplify right side
   570,700x = 1,476,536,056,384
5. Step 5: Solve for x
   x = 1,476,536,056,384/570,700
6. Step 6: Final answer
   x = 2,587,236.83