Finding the Third Proportional to 133,434 and 287,268.75

Step by Step Solution

1. Step 1: Write the proportion equation
   133,434 : 287,268.75 = 287,268.75 : x
2. Step 2: Convert to fraction form
   133,434/287,268.75 = 287,268.75/x
3. Step 3: Cross multiply
   133,434x = 287,268.75 × 287,268.75
4. Step 4: Simplify right side
   133,434x = 82,523,334,726.56
5. Step 5: Solve for x
   x = 82,523,334,726.56/133,434
6. Step 6: Final answer
   x = 618,458.07