Finding the Third Proportional to 132,264 and 285,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,264 : 285,436.50 = 285,436.50 : x
2. Step 2: Convert to fraction form
   132,264/285,436.50 = 285,436.50/x
3. Step 3: Cross multiply
   132,264x = 285,436.50 × 285,436.50
4. Step 4: Simplify right side
   132,264x = 81,473,995,532.25
5. Step 5: Solve for x
   x = 81,473,995,532.25/132,264
6. Step 6: Final answer
   x = 615,995.25