Finding the Third Proportional to 51,016.50 and 84,312

Step by Step Solution

1. Step 1: Write the proportion equation
   51,016.50 : 84,312 = 84,312 : x
2. Step 2: Convert to fraction form
   51,016.50/84,312 = 84,312/x
3. Step 3: Cross multiply
   51,016.50x = 84,312 × 84,312
4. Step 4: Simplify right side
   51,016.50x = 7,108,513,344
5. Step 5: Solve for x
   x = 7,108,513,344/51,016.50
6. Step 6: Final answer
   x = 139,337.53