Finding the Third Proportional to 231,715.50 and 507,720

Step by Step Solution

1. Step 1: Write the proportion equation
   231,715.50 : 507,720 = 507,720 : x
2. Step 2: Convert to fraction form
   231,715.50/507,720 = 507,720/x
3. Step 3: Cross multiply
   231,715.50x = 507,720 × 507,720
4. Step 4: Simplify right side
   231,715.50x = 257,779,598,400
5. Step 5: Solve for x
   x = 257,779,598,400/231,715.50
6. Step 6: Final answer
   x = 1,112,483.19