Finding the Third Proportional to 137,287.50 and 300,819

Step by Step Solution

1. Step 1: Write the proportion equation
   137,287.50 : 300,819 = 300,819 : x
2. Step 2: Convert to fraction form
   137,287.50/300,819 = 300,819/x
3. Step 3: Cross multiply
   137,287.50x = 300,819 × 300,819
4. Step 4: Simplify right side
   137,287.50x = 90,492,070,761
5. Step 5: Solve for x
   x = 90,492,070,761/137,287.50
6. Step 6: Final answer
   x = 659,142.83