Finding the Third Proportional to 236,428.50 and 513,045

Step by Step Solution

1. Step 1: Write the proportion equation
   236,428.50 : 513,045 = 513,045 : x
2. Step 2: Convert to fraction form
   236,428.50/513,045 = 513,045/x
3. Step 3: Cross multiply
   236,428.50x = 513,045 × 513,045
4. Step 4: Simplify right side
   236,428.50x = 263,215,172,025
5. Step 5: Solve for x
   x = 263,215,172,025/236,428.50
6. Step 6: Final answer
   x = 1,113,297.14