Finding the Third Proportional to 510,155 and 762,567

Step by Step Solution

1. Step 1: Write the proportion equation
   510,155 : 762,567 = 762,567 : x
2. Step 2: Convert to fraction form
   510,155/762,567 = 762,567/x
3. Step 3: Cross multiply
   510,155x = 762,567 × 762,567
4. Step 4: Simplify right side
   510,155x = 581,508,429,489
5. Step 5: Solve for x
   x = 581,508,429,489/510,155
6. Step 6: Final answer
   x = 1,139,866.18