Finding the Third Proportional to 147,716.50 and 215,116

Step by Step Solution

1. Step 1: Write the proportion equation
   147,716.50 : 215,116 = 215,116 : x
2. Step 2: Convert to fraction form
   147,716.50/215,116 = 215,116/x
3. Step 3: Cross multiply
   147,716.50x = 215,116 × 215,116
4. Step 4: Simplify right side
   147,716.50x = 46,274,893,456
5. Step 5: Solve for x
   x = 46,274,893,456/147,716.50
6. Step 6: Final answer
   x = 313,268.28