Finding the Third Proportional to 400,099.50 and 613,513

Step by Step Solution

1. Step 1: Write the proportion equation
   400,099.50 : 613,513 = 613,513 : x
2. Step 2: Convert to fraction form
   400,099.50/613,513 = 613,513/x
3. Step 3: Cross multiply
   400,099.50x = 613,513 × 613,513
4. Step 4: Simplify right side
   400,099.50x = 376,398,201,169
5. Step 5: Solve for x
   x = 376,398,201,169/400,099.50
6. Step 6: Final answer
   x = 940,761.49