Finding the Third Proportional to 231,721 and 507,730

Step by Step Solution

1. Step 1: Write the proportion equation
   231,721 : 507,730 = 507,730 : x
2. Step 2: Convert to fraction form
   231,721/507,730 = 507,730/x
3. Step 3: Cross multiply
   231,721x = 507,730 × 507,730
4. Step 4: Simplify right side
   231,721x = 257,789,752,900
5. Step 5: Solve for x
   x = 257,789,752,900/231,721
6. Step 6: Final answer
   x = 1,112,500.61