Finding the Third Proportional to 613,401 and 931,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   613,401 : 931,138.50 = 931,138.50 : x
2. Step 2: Convert to fraction form
   613,401/931,138.50 = 931,138.50/x
3. Step 3: Cross multiply
   613,401x = 931,138.50 × 931,138.50
4. Step 4: Simplify right side
   613,401x = 867,018,906,182.25
5. Step 5: Solve for x
   x = 867,018,906,182.25/613,401
6. Step 6: Final answer
   x = 1,413,461.84