Finding the Third Proportional to 231,700 and 507,688

Step by Step Solution

1. Step 1: Write the proportion equation
   231,700 : 507,688 = 507,688 : x
2. Step 2: Convert to fraction form
   231,700/507,688 = 507,688/x
3. Step 3: Cross multiply
   231,700x = 507,688 × 507,688
4. Step 4: Simplify right side
   231,700x = 257,747,105,344
5. Step 5: Solve for x
   x = 257,747,105,344/231,700
6. Step 6: Final answer
   x = 1,112,417.37