Finding the Third Proportional to 133,710 and 278,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,710 : 278,629.50 = 278,629.50 : x
2. Step 2: Convert to fraction form
   133,710/278,629.50 = 278,629.50/x
3. Step 3: Cross multiply
   133,710x = 278,629.50 × 278,629.50
4. Step 4: Simplify right side
   133,710x = 77,634,398,270.25
5. Step 5: Solve for x
   x = 77,634,398,270.25/133,710
6. Step 6: Final answer
   x = 580,617.74