Finding the Third Proportional to 131,370 and 287,276.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,370 : 287,276.25 = 287,276.25 : x
2. Step 2: Convert to fraction form
   131,370/287,276.25 = 287,276.25/x
3. Step 3: Cross multiply
   131,370x = 287,276.25 × 287,276.25
4. Step 4: Simplify right side
   131,370x = 82,527,643,814.06
5. Step 5: Solve for x
   x = 82,527,643,814.06/131,370
6. Step 6: Final answer
   x = 628,207.69