Finding the Third Proportional to 257,070 and 557,044.50

Step by Step Solution

1. Step 1: Write the proportion equation
   257,070 : 557,044.50 = 557,044.50 : x
2. Step 2: Convert to fraction form
   257,070/557,044.50 = 557,044.50/x
3. Step 3: Cross multiply
   257,070x = 557,044.50 × 557,044.50
4. Step 4: Simplify right side
   257,070x = 310,298,574,980.25
5. Step 5: Solve for x
   x = 310,298,574,980.25/257,070
6. Step 6: Final answer
   x = 1,207,058.68